APA (7th ed.) Citation

Farnol, J. (2009). Great Britain at War. Project Gutenberg.

Chicago Style (17th ed.) Citation

Farnol, Jeffery. Great Britain at War. Project Gutenberg, 2009.

MLA (9th ed.) Citation

Farnol, Jeffery. Great Britain at War. Project Gutenberg, 2009.

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