APA (7th ed.) Citation

Chesterton, G. K. (2008). What I Saw in America. Project Gutenberg.

Chicago Style (17th ed.) Citation

Chesterton, G. K. What I Saw in America. Project Gutenberg, 2008.

MLA (9th ed.) Citation

Chesterton, G. K. What I Saw in America. Project Gutenberg, 2008.

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