APA (7th ed.) Citation

Arthur, R., & Barth, E. (2010). Ring Once for Death. Project Gutenberg.

Chicago Style (17th ed.) Citation

Arthur, Robert, and Ernie Barth. Ring Once for Death. Project Gutenberg, 2010.

MLA (9th ed.) Citation

Arthur, Robert, and Ernie Barth. Ring Once for Death. Project Gutenberg, 2010.

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