Cita APA (7a ed.)

Whittaker, W. E. (2009). Frontier forts of Iowa: Indians, traders, and soldiers, 1682-1862. University of Iowa Press.

Cita Chicago Style (17a ed.)

Whittaker, William E. Frontier Forts of Iowa: Indians, Traders, and Soldiers, 1682-1862. Iowa City: University of Iowa Press, 2009.

Cita MLA (8a ed.)

Whittaker, William E. Frontier Forts of Iowa: Indians, Traders, and Soldiers, 1682-1862. University of Iowa Press, 2009.