APA (7th ed.) Citation

Knight, S. S. (2013). Human Life. Project Gutenberg.

Chicago Style (17th ed.) Citation

Knight, Sherwood Sweet. Human Life. Project Gutenberg, 2013.

MLA (9th ed.) Citation

Knight, Sherwood Sweet. Human Life. Project Gutenberg, 2013.

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