Cita APA (7th ed.)
Bush, H. K. (2007). Mark Twain and the spiritual crisis of his age. University of Alabama Press.
Cita Chicago (17th ed.)
Bush, Harold K. Mark Twain and the Spiritual Crisis of His Age. Tuscaloosa: University of Alabama Press, 2007.
Cita MLA (9th ed.)
Bush, Harold K. Mark Twain and the Spiritual Crisis of His Age. University of Alabama Press, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.