APA (7th ed.) Citation

Curtis, E. S. (2006). The North American Indian, Vol. 1. Project Gutenberg.

Chicago Style (17th ed.) Citation

Curtis, Edward S. The North American Indian, Vol. 1. Project Gutenberg, 2006.

MLA (9th ed.) Citation

Curtis, Edward S. The North American Indian, Vol. 1. Project Gutenberg, 2006.

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