Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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