APA (7th ed.) Citation

Cullum, R. (2005). The Man in the Twilight. Project Gutenberg.

Chicago Style (17th ed.) Citation

Cullum, Ridgwell. The Man in the Twilight. Project Gutenberg, 2005.

MLA (9th ed.) Citation

Cullum, Ridgwell. The Man in the Twilight. Project Gutenberg, 2005.

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