APA (7th ed.) Citation

McCabe, J. (1990). The story of evolution. Project Gutenberg.

Chicago Style (17th ed.) Citation

McCabe, Joseph. The Story of Evolution. Champaign, Ill: Project Gutenberg, 1990.

MLA (9th ed.) Citation

McCabe, Joseph. The Story of Evolution. Project Gutenberg, 1990.

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