APA (7th ed.) Citation

Field, R. (2007). American Civil war fortifications (1. publ.). Osprey.

Chicago Style (17th ed.) Citation

Field, Ron. American Civil War Fortifications. 1. publ. Oxford: Osprey, 2007.

MLA (9th ed.) Citation

Field, Ron. American Civil War Fortifications. 1. publ. Osprey, 2007.

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