APA (7th ed.) Citation

Ruthven, A. G. (1908). Variations and genetic relationships of the garter-snakes. Govt. print. off.

Chicago Style (17th ed.) Citation

Ruthven, Alexander Grant. Variations and Genetic Relationships of the Garter-snakes. Washington: Govt. print. off, 1908.

MLA (9th ed.) Citation

Ruthven, Alexander Grant. Variations and Genetic Relationships of the Garter-snakes. Govt. print. off, 1908.

Warning: These citations may not always be 100% accurate.