APA (7th ed.) Citation

Long, F. B. (2009). The Calm Man. Project Gutenberg.

Chicago Style (17th ed.) Citation

Long, Frank Belknap. The Calm Man. Project Gutenberg, 2009.

MLA (9th ed.) Citation

Long, Frank Belknap. The Calm Man. Project Gutenberg, 2009.

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