APA (7th ed.) Citation

Tracy, L. (2012). The King of Diamonds: A Tale of Mystery and Adventure. Project Gutenberg.

Chicago Style (17th ed.) Citation

Tracy, Louis. The King of Diamonds: A Tale of Mystery and Adventure. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Tracy, Louis. The King of Diamonds: A Tale of Mystery and Adventure. Project Gutenberg, 2012.

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