APA (7th ed.) Citation

Gloyd, H. K. (1940). The rattlesnakes, genera Sistrurus and Crotalus.: A study in zoogeography and evolution. [publisher not identified].

Chicago Style (17th ed.) Citation

Gloyd, Howard K. The Rattlesnakes, Genera Sistrurus and Crotalus.: A Study in Zoogeography and Evolution. Chicago: [publisher not identified], 1940.

MLA (9th ed.) Citation

Gloyd, Howard K. The Rattlesnakes, Genera Sistrurus and Crotalus.: A Study in Zoogeography and Evolution. [publisher not identified], 1940.

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