Owain a'r cloc /
Whybrow, Ian.
Reynolds, Adrian.
Sioned Lleinau.
Llandysul : Gwasg Gomer,
2004.
Argraffiad Saesneg gwreiddiol = Original English edition : London : Penguin Books, 2004.
Addasiad Cymraeg gan = Welsh adaptation by : Sioned Lleinau.
Dinosaurs
Time