APA (7th ed.) Citation

Post, M. D. (2001). The Sleuth of St. James's Square. Project Gutenberg.

Chicago Style (17th ed.) Citation

Post, Melville Davisson. The Sleuth of St. James's Square. Project Gutenberg, 2001.

MLA (9th ed.) Citation

Post, Melville Davisson. The Sleuth of St. James's Square. Project Gutenberg, 2001.

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