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

References

• 1996. database, NODC Taxonomic Code
• 1996. database, The PLANTS Database
• 2000. database, The PLANTS Database
• AFPD. 2008. African Flowering Plants Database - Base de Donnees des Plantes a Fleurs D'Afrique.
• Anonymous. 1986. List-Based Rec., Soil Conserv. Serv., U.S.D.A. Database of the U.S.D.A., Beltsville.
• CONABIO. 2009. Catálogo taxonómico de especies de México. 1. In Capital Nat. México. CONABIO, Mexico City.
• Felder, D.L. and D.K. Camp (eds.), Gulf of Mexico–Origins, Waters, and Biota. Biodiversity. Texas A&M Press, College Station, Texas.
• Flora of China Editorial Committee. 2007. Fl. China 13: 1–548. Science Press & Missouri Botanical Garden Press, Beijing & St. Louis.
• Gibbs Russell, G. E., W. G. Welman, E. Reitief, K. L. Immelman, G. Germishuizen, B. J. Pienaar, M. v. Wyk & A. Nicholas. 1987. List of species of southern African plants. Mem. Bot. Surv. S. Africa 2(1–2): 1–152(pt. 1), 1–270(pt. 2).
• Holotype: Griffiths, D. 1916. Bull. Torrey Bot. Club. 43: 92.
• Orrell T. (custodian) (2013). ITIS Regional: The Integrated Taxonomic Information System (version Apr 2011). 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.
• Small, J. K. 1933. Man. S.E. Fl. i–xxii, 1–1554. Published by the Author, New York.
• WoRMS (2013). Opuntia stricta (Haworth) Haworth, 1812. Accessed through: Tunnel, W.; Moretzsohn, F. (2013) Gulf of Mexico register of marine species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=418674 on 2013-03-02