Kaplan, J. (1966). Mr. Clemens and Mark Twain: A biography. Simon and Schuster.
Cita Chicago (17th ed.)Kaplan, Justin. Mr. Clemens and Mark Twain: A Biography. New York: Simon and Schuster, 1966.
Cita MLA (9th ed.)Kaplan, Justin. Mr. Clemens and Mark Twain: A Biography. Simon and Schuster, 1966.
Atenció: Aquestes cites poden no estar 100% correctes.