Day, D. (1991). Tolkien: The illustrated encyclopedia. Macmillan ; Maxwell Macmillan Canada ; Maxwell Macmillan International.
Dyfyniad Arddull ChicagoDay, David. Tolkien: The Illustrated Encyclopedia. New York : Toronto : New York: Macmillan ; Maxwell Macmillan Canada ; Maxwell Macmillan International, 1991.
Dyfyniad MLADay, David. Tolkien: The Illustrated Encyclopedia. Macmillan ; Maxwell Macmillan Canada ; Maxwell Macmillan International, 1991.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.