APA (7th ed.) Citation

Riggs, S. R. (2013). Mary and I Forty Years with the Sioux. Project Gutenberg.

Chicago Style (17th ed.) Citation

Riggs, Stephen Return. Mary and I Forty Years with the Sioux. Project Gutenberg, 2013.

MLA (9th ed.) Citation

Riggs, Stephen Return. Mary and I Forty Years with the Sioux. Project Gutenberg, 2013.

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