APA (7th ed.) Citation

Graves, A. K., & Fox, E. L. (2004). The Secrets of the German War Office. Project Gutenberg.

Chicago Style (17th ed.) Citation

Graves, Armgaard Karl, and Edward Lyell Fox. The Secrets of the German War Office. Project Gutenberg, 2004.

MLA (9th ed.) Citation

Graves, Armgaard Karl, and Edward Lyell Fox. The Secrets of the German War Office. Project Gutenberg, 2004.

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