APA (7th ed.) Citation

Legler, J. M. (2010). A New Snake of the Genus Geophis From Chihuahua, Mexico. Project Gutenberg.

Chicago Style (17th ed.) Citation

Legler, John M. A New Snake of the Genus Geophis From Chihuahua, Mexico. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Legler, John M. A New Snake of the Genus Geophis From Chihuahua, Mexico. Project Gutenberg, 2010.

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