RATELIFF, J. Grima the Wormtongue: Tolkien and his Sources. Mallorn: The Journal of the Tolkien Society, [S. l.], n. 25, p. 15–17, 1988. Disponível em: https://journals.tolkiensociety.org/mallorn/article/view/226. Acesso em: 29 apr. 2024.