APA (7th ed.) Citation

Marquand, J. P. (2003). The Unspeakable Gentleman. Project Gutenberg.

Chicago Style (17th ed.) Citation

Marquand, John P. The Unspeakable Gentleman. Project Gutenberg, 2003.

MLA (9th ed.) Citation

Marquand, John P. The Unspeakable Gentleman. Project Gutenberg, 2003.

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