Argraffiad Saesneg gwreiddiol = Original English edition : London : Orchard Books, 2003.
Addasiad Cymraeg gan = Welsh adaptation by : Sioned Lleinau.
Y dosbarth bale by Adèle Geras. ISBN 1843233347. Published by Gwasg Gomer in 2004. Publication and catalogue information, links to buy online and reader comments.