Arg. Saesneg gwreiddiol = Original English ed.: Llundain: A & C Black (Publishers), 1998.
Addasiad Cymraeg gan = Welsh adaptation by: Helen Emanuel Davies.
Anrheg gan gysgod by Mary Hooper. ISBN 1859027652. Published by Gwasg Gomer in 1999. Publication and catalogue information, links to buy online and reader comments.