APA (7th ed.) Citation

Twain, M. (2005). The Innocents Abroad. Project Gutenberg.

Chicago Style (17th ed.) Citation

Twain, Mark. The Innocents Abroad. Project Gutenberg, 2005.

MLA (9th ed.) Citation

Twain, Mark. The Innocents Abroad. Project Gutenberg, 2005.

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