Purtill, R. L. (1984). J. R. R. Tolkien - myth, morality, and religion (1. ed.). Harper Row.
Cita Chicago Style (17a ed.)Purtill, Richard Lawrence. J. R. R. Tolkien - Myth, Morality, and Religion. 1. ed. San Francisco u.a: Harper Row, 1984.
Cita MLA (8a ed.)Purtill, Richard Lawrence. J. R. R. Tolkien - Myth, Morality, and Religion. 1. ed. Harper Row, 1984.
Precaución: Estas citas no son 100% exactas.