APA (7th ed.) Citation

Collingwood, H. (2007). In Search of El Dorado. Project Gutenberg.

Chicago Style (17th ed.) Citation

Collingwood, Harry. In Search of El Dorado. Project Gutenberg, 2007.

MLA (9th ed.) Citation

Collingwood, Harry. In Search of El Dorado. Project Gutenberg, 2007.

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