APA (7th ed.) Citation

Howell, E. M. (2011). Hermann Stieffel, Soldier Artist of the West. Project Gutenberg.

Chicago Style (17th ed.) Citation

Howell, Edgar M. Hermann Stieffel, Soldier Artist of the West. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Howell, Edgar M. Hermann Stieffel, Soldier Artist of the West. Project Gutenberg, 2011.

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