APA (7th ed.) Citation

Lang, A. (2007). The Mark Of Cain. Project Gutenberg.

Chicago Style (17th ed.) Citation

Lang, Andrew. The Mark Of Cain. Project Gutenberg, 2007.

MLA (9th ed.) Citation

Lang, Andrew. The Mark Of Cain. Project Gutenberg, 2007.

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