Lua APA (7ú heag.)

Bush, H. K. (2007). Mark Twain and the spiritual crisis of his age. University of Alabama Press.

Lua i Stíl Chicago (17ú heag.)

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

Lua MLA (9ú heag.)

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

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.