Y ddafad ddrwg /
Amery, Heather.
Cartwright, Stephen,1947-2004.
Huws, Emily.
Llandysul : Gwasg Gomer,
2002.
Argraffiad Saesneg gwreiddiol = Original English edition : London : Usborne Publishing, 1989.
Addasiad Cymraeg gan = Welsh adaptation by : Emily Huws.
Sheep