APA (7th ed.) Citation

French, J. L. (2009). Masterpieces of Mystery Riddle Stories. Project Gutenberg.

Chicago Style (17th ed.) Citation

French, Joseph Lewis. Masterpieces of Mystery Riddle Stories. Project Gutenberg, 2009.

MLA (9th ed.) Citation

French, Joseph Lewis. Masterpieces of Mystery Riddle Stories. Project Gutenberg, 2009.

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