APA (7th ed.) Citation

Tarbell, L. (2008). Valley of the Croen. Project Gutenberg.

Chicago Style (17th ed.) Citation

Tarbell, Lee. Valley of the Croen. Project Gutenberg, 2008.

MLA (9th ed.) Citation

Tarbell, Lee. Valley of the Croen. Project Gutenberg, 2008.

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