LARSEN, K. We hatesses those tricksy numbers: Tolkien, Lewis and maths anxiety. Mallorn: The Journal of the Tolkien Society, [S. l.], n. 52, p. 33–35, 2011. Disponível em: https://journals.tolkiensociety.org/mallorn/article/view/72. Acesso em: 18 apr. 2024.