APA (7th ed.) Citation

Wallace, E. (2008). The Man Who Knew. Project Gutenberg.

Chicago Style (17th ed.) Citation

Wallace, Edgar. The Man Who Knew. Project Gutenberg, 2008.

MLA (9th ed.) Citation

Wallace, Edgar. The Man Who Knew. Project Gutenberg, 2008.

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