APA-referens (7:e uppl.)

Purtill, R. L. (1984). J.R.R. Tolkien: Myth, morality, and religion. Harper & Row.

Chicago-referens (17:e uppl.)

Purtill, Richard L. J.R.R. Tolkien: Myth, Morality, and Religion. San Francisco: Harper & Row, 1984.

MLA-referens (8:e uppl.)

Purtill, Richard L. J.R.R. Tolkien: Myth, Morality, and Religion. Harper & Row, 1984.