APA (7th ed.) Citation

Field, R. (2006). Forts of the American Frontier 1820 - 91: The Southern Plains ans Southwest (1. publ.). Osprey.

Chicago Style (17th ed.) Citation

Field, Ron. Forts of the American Frontier 1820 - 91: The Southern Plains Ans Southwest. 1. publ. Oxford: Osprey, 2006.

MLA (9th ed.) Citation

Field, Ron. Forts of the American Frontier 1820 - 91: The Southern Plains Ans Southwest. 1. publ. Osprey, 2006.

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