APA (7th ed.) Citation

Rankin, J. (2012). Natural and Artificial Duck Culture. Project Gutenberg.

Chicago Style (17th ed.) Citation

Rankin, James. Natural and Artificial Duck Culture. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Rankin, James. Natural and Artificial Duck Culture. Project Gutenberg, 2012.

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