Slater, L. (1970). The pledge. Simon and Schuster.
Lua i Stíl Chicago (17ú heag.)Slater, Leonard. The Pledge. New York: Simon and Schuster, 1970.
Lua MLA (8ú heag.)Slater, Leonard. The Pledge. Simon and Schuster, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.