APA (7th ed.) Citation

Duellman, W. E., & Trueb, L. (2011). Neotropical Hylid Frogs, Genus Smilisca. Project Gutenberg.

Chicago Style (17th ed.) Citation

Duellman, William Edward, and Linda Trueb. Neotropical Hylid Frogs, Genus Smilisca. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Duellman, William Edward, and Linda Trueb. Neotropical Hylid Frogs, Genus Smilisca. Project Gutenberg, 2011.

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