Cita APA (7a ed.)

Twain, M. (2001). Roughing it. Digital Scanning.

Cita Chicago Style (17a ed.)

Twain, Mark. Roughing It. Scituate, Mass.: Digital Scanning, 2001.

Cita MLA (9a ed.)

Twain, Mark. Roughing It. Digital Scanning, 2001.