APA (7th ed.) Citation

Ryan, M. E., & Curtis, E. S. (2009). The Flute of the Gods. Project Gutenberg.

Chicago Style (17th ed.) Citation

Ryan, Marah Ellis, and Edward S. Curtis. The Flute of the Gods. Project Gutenberg, 2009.

MLA (9th ed.) Citation

Ryan, Marah Ellis, and Edward S. Curtis. The Flute of the Gods. Project Gutenberg, 2009.

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