Villanueva, Rene O. Si Inggolok at ang planeta pakaskas / Rene O. Villanueva - Manila : Cacho Publishing House, c1988. - 15 pages : color illustrations ; 18 cm. - Aklat Batibot . ISBN: 9711900009 Subjects--Topical Terms: Children's stories. Dewey Class. No.: EB 823.8 V718 1988