APA (7th ed.) Citation

Twain, M. (2004). Goldsmith's Friend Abroad Again. Project Gutenberg.

Chicago Style (17th ed.) Citation

Twain, Mark. Goldsmith's Friend Abroad Again. Project Gutenberg, 2004.

MLA (9th ed.) Citation

Twain, Mark. Goldsmith's Friend Abroad Again. Project Gutenberg, 2004.

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