Argraffiad Saesneg gwreiddiol = Original English edition : London : Walker Books, 2002.
Addasiad Cymraeg gan = Welsh adaptation by : Gwynne Williams.
Ga i chwarae? by Jill Murphy. ISBN 1855965763. Published by Gwasg y Dref Wen in 2003. Publication and catalogue information, links to buy online and reader comments.