Twain, M. (2001). Roughing it. Digital Scanning.
Lua i Stíl Chicago (17ú heag.)Twain, Mark. Roughing It. Scituate, Mass.: Digital Scanning, 2001.
Lua MLA (9ú heag.)Twain, Mark. Roughing It. Digital Scanning, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.