APA (7th ed.) Citation

Hough, E., & Keller, A. I. (2009). The Magnificent Adventure Being the Story of the World's Greatest Exploration and the Romance of a Very Gallant Gentleman. Project Gutenberg.

Chicago Style (17th ed.) Citation

Hough, Emerson, and Arthur Ignatius Keller. The Magnificent Adventure Being the Story of the World's Greatest Exploration and the Romance of a Very Gallant Gentleman. Project Gutenberg, 2009.

MLA (9th ed.) Citation

Hough, Emerson, and Arthur Ignatius Keller. The Magnificent Adventure Being the Story of the World's Greatest Exploration and the Romance of a Very Gallant Gentleman. Project Gutenberg, 2009.

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