APA (7th ed.) Citation

Duncan, N. (2013). The Adventures of Billy Topsail. Project Gutenberg.

Chicago Style (17th ed.) Citation

Duncan, Norman. The Adventures of Billy Topsail. Project Gutenberg, 2013.

MLA (9th ed.) Citation

Duncan, Norman. The Adventures of Billy Topsail. Project Gutenberg, 2013.

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