Arg. Saesneg gwreiddiol = Original English ed.: Longman, 1994.
Addasiad Cymraeg gan = Welsh adaptation by: Emily Huws.
Drwy'r drych by Sheila Lavelle. ISBN 1860853382. Published by Uned Iaith Genedlaethol Cymru in 1998. Publication and catalogue information, links to buy online and reader comments.