APA (7th ed.) Citation

Westcott, A. F., & Stevens, W. O. (2008). A History of Sea Power. Project Gutenberg.

Chicago Style (17th ed.) Citation

Westcott, Allan F., and William Oliver Stevens. A History of Sea Power. Project Gutenberg, 2008.

MLA (9th ed.) Citation

Westcott, Allan F., and William Oliver Stevens. A History of Sea Power. Project Gutenberg, 2008.

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