Zimbardo, R. A., & Isaacs, N. D. (2004). Understanding The lord of the rings: The best of Tolkien criticism. Houghton Mifflin.
Lua i Stíl Chicago (17ú heag.)Zimbardo, Rose A., agus Neil D. Isaacs. Understanding The Lord of the Rings: The Best of Tolkien Criticism. Boston: Houghton Mifflin, 2004.
Lua MLA (9ú heag.)Zimbardo, Rose A., agus Neil D. Isaacs. Understanding The Lord of the Rings: The Best of Tolkien Criticism. Houghton Mifflin, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.