APA (7th ed.) Citation

Grey, Z. (1999). The Call of the Canyon. Project Gutenberg.

Chicago Style (17th ed.) Citation

Grey, Zane. The Call of the Canyon. Project Gutenberg, 1999.

MLA (9th ed.) Citation

Grey, Zane. The Call of the Canyon. Project Gutenberg, 1999.

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