APA (7th ed.) Citation

Otis, J. (2007). The Search for the Silver City: A Tale of Adventure in Yucatan. Project Gutenberg.

Chicago Style (17th ed.) Citation

Otis, James. The Search for the Silver City: A Tale of Adventure in Yucatan. Project Gutenberg, 2007.

MLA (9th ed.) Citation

Otis, James. The Search for the Silver City: A Tale of Adventure in Yucatan. Project Gutenberg, 2007.

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