APA (7th ed.) Citation

Allen, W. (2009). Ulysses S. Grant. Project Gutenberg.

Chicago Style (17th ed.) Citation

Allen, Walter. Ulysses S. Grant. Project Gutenberg, 2009.

MLA (9th ed.) Citation

Allen, Walter. Ulysses S. Grant. Project Gutenberg, 2009.

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