APA (7th ed.) Citation

Norris, F. (1990). The octopus: A story of California. Project Gutenberg.

Chicago Style (17th ed.) Citation

Norris, Frank. The Octopus: A Story of California. Champaign, Ill: Project Gutenberg, 1990.

MLA (9th ed.) Citation

Norris, Frank. The Octopus: A Story of California. Project Gutenberg, 1990.