APA ציטוט

Simpson, G. G. (1945). The principles of classification and a classification of mammals. American Museum of Natural History.

Chicago Style (17th ed.) Citation

Simpson, George Gaylord. The Principles of Classification and a Classification of Mammals. New York: American Museum of Natural History, 1945.

ציטוט MLA

Simpson, George Gaylord. The Principles of Classification and a Classification of Mammals. American Museum of Natural History, 1945.