APA (7th ed.) Citation

Ballard, T. (2007). Battle of Antietam. Center of Military History, U.S. Army.

Chicago Style (17th ed.) Citation

Ballard, Ted. Battle of Antietam. Washington, D.C.: Center of Military History, U.S. Army, 2007.

MLA (9th ed.) Citation

Ballard, Ted. Battle of Antietam. Center of Military History, U.S. Army, 2007.

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