APA (7th ed.) Citation

Whymper, F. (2014). The Sea: Its Stirring Story of Adventure, Peril, and Heroism. Volume 4. Project Gutenberg.

Chicago Style (17th ed.) Citation

Whymper, Frederick. The Sea: Its Stirring Story of Adventure, Peril, and Heroism. Volume 4. Project Gutenberg, 2014.

MLA (9th ed.) Citation

Whymper, Frederick. The Sea: Its Stirring Story of Adventure, Peril, and Heroism. Volume 4. Project Gutenberg, 2014.

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