APA (7th ed.) Citation

Warner, S. (2008). The Old Helmet, Volume II. Project Gutenberg.

Chicago Style (17th ed.) Citation

Warner, Susan. The Old Helmet, Volume II. Project Gutenberg, 2008.

MLA (9th ed.) Citation

Warner, Susan. The Old Helmet, Volume II. Project Gutenberg, 2008.

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