APA-referens (7:e uppl.)

Drake, S. A. (2001). The battle of Gettysburg, 1863. Digital Scanning.

Chicago-referens (17:e uppl.)

Drake, Samuel Adams. The Battle of Gettysburg, 1863. Scituate, Mass.: Digital Scanning, 2001.

MLA-referens (9:e uppl.)

Drake, Samuel Adams. The Battle of Gettysburg, 1863. Digital Scanning, 2001.