APA (7th ed.) Citation

Whitaker, H. (2011). The Mystery of The Barranca. Project Gutenberg.

Chicago Style (17th ed.) Citation

Whitaker, Herman. The Mystery of The Barranca. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Whitaker, Herman. The Mystery of The Barranca. Project Gutenberg, 2011.

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