APA (7th ed.) Citation

Harte, B. (2006). The Crusade of the Excelsior. Project Gutenberg.

Chicago Style (17th ed.) Citation

Harte, Bret. The Crusade of the Excelsior. Project Gutenberg, 2006.

MLA (9th ed.) Citation

Harte, Bret. The Crusade of the Excelsior. Project Gutenberg, 2006.

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