Cita APA (7th ed.)
Twain, M. (1880). Roughing it: Authorized ed. Tauchnitz.
Cita Chicago (17th ed.)
Twain, Mark. Roughing It: Authorized Ed. Leipzig: Tauchnitz, 1880.
Cita MLA (9th ed.)
Twain, Mark. Roughing It: Authorized Ed. Tauchnitz, 1880.
Atenció: Aquestes cites poden no estar 100% correctes.