The following bibliography has been generated by bringing together all references provided by our content partners. There may be duplication.
- Simpson, George Gaylord. 1945. The principles of classification and a classification of mammals. Bulletin of the American Museum of Natural History, vol. 85. xvi + 350
- T. J. Parker and W. A. Haswell. 1897. A Text-Book of Zoology. Volume II. MacMillan and Company, London