Puzo, M. (1991). The fourth K. Random House, Pan Books.
Lua i Stíl Chicago (17ú heag.)Puzo, Mario. The Fourth K. N.Y. : London: Random House, Pan Books, 1991.
Lua MLA (8ú heag.)Puzo, Mario. The Fourth K. Random House, Pan Books, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.