Style de citation APA (7e éd.)

Bush, H. K. (2007). Mark Twain and the Spiritual Crisis of His Age. University of Alabama Press.

Style de citation Chicago (17e éd.)

Bush, Harold K. Mark Twain and the Spiritual Crisis of His Age. Tuscaloosa: University of Alabama Press, 2007.

Style de citation MLA (8e éd.)

Bush, Harold K. Mark Twain and the Spiritual Crisis of His Age. University of Alabama Press, 2007.