The following bibliography has been generated by bringing together all references provided by our content partners. There may be duplication.

References

• "Offshore/Inshore Fisheries Development" (On-line). Accessed October 5, 1999 at http://www.ifmt.nf.ca/mi-net/fishdeve/grseal.htm.
• "Seal Conservation Society" (On-line). Accessed October 5, 1999 at http://www.greenchannel.com/tec/species/grey.htm.
• * Anderson, R.C. 2000. "Nematode parasites of vertebrates: their development and transmission", CAB International, 672 pages ISBN: 0851994210
• * Encyclopedia of Earth. Authors; Encyclopedia of Life; Peter Saundry. 2011. "Grey seal". Topic ed. C.Michael Hogan. Ed.-in-Chief. Cutler J.Cleveland http://www.eoearth.org/article/Grey_seal .
• 1. IUCN Red List (November, 2008) http://www.iucnredlist.org
• 1996. database, NODC Taxonomic Code
• 1998. website, Mammal Species of the World
• 2. Sea Mammal Research Unit. (2007) Scientific Advice on Matters Related to the Management of Seal Populations. University of St Andrews, Scotland. Available at http://smub.st-and.ac.uk/CurrentResearch.htm/SCOS2007/SCOS_2007_FINAL_ADVICE_1.pdf
• 3. Seal Conservation Society (January, 2002) http://www.pinnipeds.org/species/grey.htm
• 4. Mammal Society fact sheet. (January, 2002) http://www.abdn.ac.uk/mammal/grey_seal.shtml
• 5. Office of Public Sector Information (January, 2008) http://www.hmso.gov.uk/si/si1994/Uksi_19942716_en_9.htm#sdiv3
• 6. King, J.E. (1983) Seals of the World. Oxford University Press, Oxford.
• 7. Morris, P. (2002) Pers. Comm.
• 8. Gotch, A.F. (1979) Mammals, their Latin Names Explained. Blandford Press Ltd, Dorset.
• 9. Westcott, S. (1996) The Grey Seals of the West Country. Stephen Westcott and Cornwall Wildlife Trust, Truro.
• Banks, R. C., R. W. McDiarmid, A. L. Gardner, and W. C. Starnes. 2003. Checklist of Vertebrates of the United States, the U.S. Territories, and Canada
• Banks, R. C., R. W. McDiarmid, A. L. Gardner, and W. C. Starnes. 2003. Checklist of Vertebrates of the United States, the U.S. Territories, and Canada
• Banks, R. C., R. W. McDiarmid, and A. L. Gardner. 1987. Checklist of Vertebrates of the United States, the U.S. Territories, and Canada. Resource Publication, no. 166
• Banks, R. C., R. W. McDiarmid, and A. L. Gardner. 1987. Checklist of Vertebrates of the United States, the U.S. Territories, and Canada. Resource Publication, no. 166. 79
• Berta, A.; Churchill, M. (2013). Halichoerus grypus (Fabricius, 1791). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=137080 on 2013-03-02
• Borges, P.A.V., Costa, A., Cunha, R., Gabriel, R., Gonçalves, V., Martins, A.F., Melo, I., Parente, M., Raposeiro, P., Rodrigues, P., Santos, R.S., Silva, L., Vieira, P. & Vieira, V. (Eds.) (2010). A list of the terrestrial and marine biota from the Azores. Princípia, Oeiras, 432 pp.
• Cattrijsse, A.; Vincx, M. (2001). Biodiversity of the benthos and the avifauna of the Belgian coastal waters: summary of data collected between 1970 and 1998. Sustainable Management of the North Sea. Federal Office for Scientific, Technical and Cultural Affairs: Brussel, Belgium. 48 pp.
• Costa DP, Robinson PW, Arnould JPY, Harrison A-L, Simmons SE, et al. 2010. Accuracy of ARGOS Locations of Pinnipeds at-Sea Estimated Using Fastloc GPS. PLoS ONE 5(1): e8677. doi:10.1371/journal.pone.0008677
• David Macdonald (1985) The Encyclopedia of Mammals. Facts on File: New York.
• Duck, C., (2002). Pup production in the British Grey seal population. http://smub.st-and.ac.uk/CurrentResearch.htm/scos.htm, 2003-10-07 00:00:00
• Dyntaxa (2013) Swedish Taxonomic Database. Accessed at www.dyntaxa.se [15-01-2013].
• E. L. Trouessart. 1904. Catalogus Mammalium Tam Viventium Quam Fossilium, Fourth Edition
• Goode, George Brown. 1884. Fisheries and Fishery Industries of the United States: Section I, Natural History of Useful Aquatic Animals, Plates. Washington, DC : Government Printing Office; Plate 21
• Hewer, H. 1974. British Seals. London: Collins.
• Hickling, G. 1962. Grey Seals and the Farne Islands. London: Routledge and Kegan Paul.
• Howson, C.M. & Picton, B.E. (ed.), (1997). The species directory of the marine fauna and flora of the British Isles and surrounding seas. Belfast: Ulster Museum. [Ulster Museum publication, no. 276.]
• JNCC (Joint Nature Conservation Committee), (1999). Marine Environment Resource Mapping And Information Database (MERMAID): Marine Nature Conservation Review Survey Database. [on-line] http://www.jncc.gov.uk/mermaid,
• Jefferson, T.A., Leatherwood, S. & Webber, M.A., (1994). FAO species identification guide. Marine mammals of the world. Rome: United Nations Environment Programme, Food and Agriculture Organization of the United Nations.
• Kedra, M. (2010). A Checklist of marine species occurring in Polish marine waters, compiled in the framework of the PESI EU FP7 project.
• King, J. 1983. Seals of the World. Ithaca, New York: Comstock Publishing Associates.
• Kinze, C. C., (2002). Photographic Guide to the Marine Mammals of the North Atlantic. Oxford: Oxford University Press.
• Koninklijk Belgisch Instituut voor Natuurwetenschappen: Beheerseenheid Mathematisch Model Noordzee en Schelde-estuarium: Oostende
• Lesage, Veronique, Jean-Francois Gosselin, Mike Hammill, Michael C.S. Kingsley, Jack Lawson (2007). Ecologically and Biologically Significant Areas (EBSAs) in the Estuary and Gulf of St. Lawrence - A marine mammal perspective. DFO Can. Sci. Advis. Sec. Res. Doc. 2007/046: 1-96.
• MEDIN (2011). UK checklist of marine species derived from the applications Marine Recorder and UNICORN, version 1.0.  
• Müller, Y. (2004). Faune et flore du littoral du Nord, du Pas-de-Calais et de la Belgique: inventaire. [Coastal fauna and flora of the Nord, Pas-de-Calais and Belgium: inventory]. Commission Régionale de Biologie Région Nord Pas-de-Calais: France. 307 pp.
• NBN (National Biodiversity Network), (2002). National Biodiversity Network gateway. http://www.searchnbn.net, 2008-10-31 00:00:00
• North-West Atlantic Ocean species (NWARMS)
• Original description: Fabricius, 1791.  Skrivter Naturhist.  Selskabet Copenhagen, 1(2):167.
• Orrell T. (custodian) (2013). ITIS Global: The Integrated Taxonomic Information System (version Sept 12). In: Species 2000 & ITIS Catalogue of Life, 11th March 2013 (Roskov Y., Kunze T., Paglinawan L., Orrell T., Nicolson D., Culham A., Bailly N., Kirk P., Bourgoin T., Baillargeon G., Hernandez F., De Wever A., eds). Digital resource at www.catalogueoflife.org/col/. Species 2000: Reading, UK.
• Ramos, M. (ed.). 2010. IBERFAUNA. The Iberian Fauna Databank
• Rice, Dale W. 1998. Marine Mammals of the World: Systematics and Distribution. Special Publications of the Society for Marine Mammals, no. 4
• Rice, Dale W. 1998. Marine Mammals of the World: Systematics and Distribution. Special Publications of the Society for Marine Mammals, no. 4. ix + 231
• Richard Weigl (2005) Longevity of Mammals in Captivity; from the Living Collections of the World. Kleine Senckenberg-Reihe 48: Stuttgart.
• Riedman, M. 1990. The Pinnipeds: Seals, Sea Lions, and Walruses. Oxford: University of California Press.
• Ronald Nowak (2003) Walker's Marine Mammals of the World. Johns Hopkins University Press: Baltimore.
• Stienen, E.W.M.; Van Waeyenberge, J.; Kuijken, E. (2003). Zeezoogdieren in Belgisch mariene wateren [Marine mammals in Belgian marine waters]. Rapport Instituut voor Natuurbehoud, A.2003.152. Instituut voor Natuurbehoud: Brussel, Belgium. 15 pp.
• Tremblay Y, Robinson PW, Costa DP. 2009. A Parsimonious Approach to Modeling Animal Movement Data. PLoS ONE 4(3): e4711. doi:10.1371/journal.pone.0004711
• UNESCO-IOC Register of Marine Organisms
• Wilson, Don E., and DeeAnn M. Reeder, eds. 1992. Mammal Species of the World: A Taxonomic and Geographic Reference, 2nd ed., 3rd printing
• Wilson, Don E., and DeeAnn M. Reeder, eds. 1993. Mammal Species of the World: A Taxonomic and Geographic Reference, 2nd ed., 3rd printing. xviii + 1207
• Wilson, Don E., and DeeAnn M. Reeder, eds. 2005. Mammal Species of the World: A Taxonomic and Geographic Reference, 3rd ed., vols. 1 & 2
• Wilson, Don E., and DeeAnn M. Reeder, eds. 2005. Mammal Species of the World: A Taxonomic and Geographic Reference, 3rd ed., vols. 1 & 2. 2142
• Wilson, Don E., and F. Russell Cole. 2000. Common Names of Mammals of the World
• Wilson, Don E., and F. Russell Cole. 2000. Common Names of Mammals of the World. xiv + 204
• Zakharov, V., A. Yablokov. 1990. Skull Asymmetry in the Baltic Grey Seal: Effects of Environmental Pollution. Ambio, 19: 266-269.
• van der Land, J. (2001). Tetrapoda, in: Costello, M.J. et al. (Ed.) (2001). European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels, 50: pp. 375-376