Cita APA (7th ed.)
Krause, S. J. (1967). Mark Twain as Critic. Johns Hopkins Press.
Cita Chicago (17th ed.)
Krause, Sydney J. Mark Twain as Critic. Baltimore: Johns Hopkins Press, 1967.
Cita MLA (9th ed.)
Krause, Sydney J. Mark Twain as Critic. Johns Hopkins Press, 1967.
Atenció: Aquestes cites poden no estar 100% correctes.