APA (7th ed.) Citation

Gregor, E. R. (2011). White Otter. Project Gutenberg.

Chicago Style (17th ed.) Citation

Gregor, Elmer Russell. White Otter. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Gregor, Elmer Russell. White Otter. Project Gutenberg, 2011.

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