APA (7th ed.) Citation

United States National Museum & Ruthven, A. G. (1908). Variations and genetic relationships of garter-snakes. U.S. G.P.O..

Chicago Style (17th ed.) Citation

United States National Museum and Alexander Grant Ruthven. Variations and Genetic Relationships of Garter-snakes. [Place of publication not identified]: U.S. G.P.O., 1908.

MLA (9th ed.) Citation

United States National Museum and Alexander Grant Ruthven. Variations and Genetic Relationships of Garter-snakes. U.S. G.P.O., 1908.