APA (7th ed.) Citation

Woodberry, G. E. (2004). Heart of Man. Project Gutenberg.

Chicago Style (17th ed.) Citation

Woodberry, George Edward. Heart of Man. Project Gutenberg, 2004.

MLA (9th ed.) Citation

Woodberry, George Edward. Heart of Man. Project Gutenberg, 2004.

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