APA (7th ed.) Citation

Severy, M. L. (1999). The Darrow Enigma. Project Gutenberg.

Chicago Style (17th ed.) Citation

Severy, Melvin L. The Darrow Enigma. Project Gutenberg, 1999.

MLA (9th ed.) Citation

Severy, Melvin L. The Darrow Enigma. Project Gutenberg, 1999.

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