APA (7th ed.) Citation

Harte, B. (2006). Openings in the Old Trail. Project Gutenberg.

Chicago Style (17th ed.) Citation

Harte, Bret. Openings in the Old Trail. Project Gutenberg, 2006.

MLA (9th ed.) Citation

Harte, Bret. Openings in the Old Trail. Project Gutenberg, 2006.

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