APA (7th ed.) Citation

McGee, W. J. (2006). The Siouan Indians. Project Gutenberg.

Chicago Style (17th ed.) Citation

McGee, W. J. The Siouan Indians. Project Gutenberg, 2006.

MLA (9th ed.) Citation

McGee, W. J. The Siouan Indians. Project Gutenberg, 2006.

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