APA (7th ed.) Citation

Williamson, A. W. (2008). The Dakotan Languages, and Their Relations to Other Languages. Project Gutenberg.

Chicago Style (17th ed.) Citation

Williamson, A. W. The Dakotan Languages, and Their Relations to Other Languages. Project Gutenberg, 2008.

MLA (9th ed.) Citation

Williamson, A. W. The Dakotan Languages, and Their Relations to Other Languages. Project Gutenberg, 2008.

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