APA (7th ed.) Citation

Wharton, E. (2013). The Marne A Tale of the War. Project Gutenberg.

Chicago Style (17th ed.) Citation

Wharton, Edith. The Marne A Tale of the War. Project Gutenberg, 2013.

MLA (9th ed.) Citation

Wharton, Edith. The Marne A Tale of the War. Project Gutenberg, 2013.

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