Argraffiad Saesneg gwreiddiol = Original English edition : London : Frances Lincoln, 2004.
Addasiad Cymraeg gan = Welsh adaptation by : Sioned Lleinau.
Eliffant yn yr ysgol by Jan Ormerod. ISBN 9781843235064. Published by Gwasg Gomer in 2005. Publication and catalogue information, links to buy online and reader comments.