Arg. Saesneg gwreiddiol = Original English ed.: Llundain: Doubleday, 1998.
Addasiad Cymraeg gan = Welsh adaptation by: Dylan Williams.
Cawl pwmpen by Helen Cooper. ISBN 190241604X. Published by Cymdeithas Lyfrau Ceredigion in 1998. Publication and catalogue information, links to buy online and reader comments.