APA (7th ed.) Citation

Rogers, R. W. (2013). The United Seas. Project Gutenberg.

Chicago Style (17th ed.) Citation

Rogers, Robert W. The United Seas. Project Gutenberg, 2013.

MLA (9th ed.) Citation

Rogers, Robert W. The United Seas. Project Gutenberg, 2013.

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