Argraffiad Saesneg gwreiddiol = Original English edition : London : Walker Books, 2004.
Addasiad Cymraeg gan = Welsh adaptation by : Sioned Lleinau.
Carwyn fy mhengwin i by Elizabeth Cody Kimmel. ISBN 9781843237167. Published by Gwasg Gomer in 2006. Publication and catalogue information, links to buy online and reader comments.