APA (7th ed.) Citation

West, J. F. (2009). Cogito, Ergo Sum. Project Gutenberg.

Chicago Style (17th ed.) Citation

West, John Foster. Cogito, Ergo Sum. Project Gutenberg, 2009.

MLA (9th ed.) Citation

West, John Foster. Cogito, Ergo Sum. Project Gutenberg, 2009.

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