APA (7th ed.) Citation

Ukers, W. H. (2009). All About Coffee. Project Gutenberg.

Chicago Style (17th ed.) Citation

Ukers, William H. All About Coffee. Project Gutenberg, 2009.

MLA (9th ed.) Citation

Ukers, William H. All About Coffee. Project Gutenberg, 2009.

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