Gardner, L. (2000). Realm of the ring lords: Beyond the portal of the twilight world. Multi MediaQuest International.
Dyfyniad Arddull ChicagoGardner, Laurence. Realm of the Ring Lords: Beyond the Portal of the Twilight World. Ottery St. Mary, England: Multi MediaQuest International, 2000.
Dyfyniad MLAGardner, Laurence. Realm of the Ring Lords: Beyond the Portal of the Twilight World. Multi MediaQuest International, 2000.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.