APA (7th ed.) Citation

Smith, H. M. (2010). The Tadpoles of Bufo cognatus Say. Project Gutenberg.

Chicago Style (17th ed.) Citation

Smith, Hobart M. The Tadpoles of Bufo Cognatus Say. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Smith, Hobart M. The Tadpoles of Bufo Cognatus Say. Project Gutenberg, 2010.

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