APA (7th ed.) Citation

Cornwell, B., & Gardner, G. (2000). The bloody ground: Battle of Antietam. Blackstone Audio, Inc..

Chicago Style (17th ed.) Citation

Cornwell, Bernard, and Grover Gardner. The Bloody Ground: Battle of Antietam. [London]: Blackstone Audio, Inc., 2000.

MLA (9th ed.) Citation

Cornwell, Bernard, and Grover Gardner. The Bloody Ground: Battle of Antietam. Blackstone Audio, Inc., 2000.