APA (7th ed.) Citation

Sinclair, U. (2004). 100%: The Story of a Patriot. Project Gutenberg.

Chicago Style (17th ed.) Citation

Sinclair, Upton. 100%: The Story of a Patriot. Project Gutenberg, 2004.

MLA (9th ed.) Citation

Sinclair, Upton. 100%: The Story of a Patriot. Project Gutenberg, 2004.

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