APA (7th ed.) Citation

Gentry, T. G. (2014). Nests and Eggs of Birds of The United States Illustrated. Project Gutenberg.

Chicago Style (17th ed.) Citation

Gentry, Thomas G. Nests and Eggs of Birds of The United States Illustrated. Project Gutenberg, 2014.

MLA (9th ed.) Citation

Gentry, Thomas G. Nests and Eggs of Birds of The United States Illustrated. Project Gutenberg, 2014.

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