Nadolig llawen, hipo bach /
Paterson, Bettina.
Llandysul : Gwasg Gomer,
2001.
Argraffiad Saesneg gwreiddiol = Original English edition : London : Scholastic, 2001.
Teitl clawr = Cover title.
Testun tu fewn i'r clawr = Text on inside cover.
Hippopotamus
Christmas