APA (7th ed.) Citation

Altsheler, J. A., & Wrenn, C. L. (2009). The Great Sioux Trail A Story of Mountain and Plain. Project Gutenberg.

Chicago Style (17th ed.) Citation

Altsheler, Joseph A., and Charles L. Wrenn. The Great Sioux Trail A Story of Mountain and Plain. Project Gutenberg, 2009.

MLA (9th ed.) Citation

Altsheler, Joseph A., and Charles L. Wrenn. The Great Sioux Trail A Story of Mountain and Plain. Project Gutenberg, 2009.

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