Arg. Saesneg gwreiddiol = Original English ed.: London: Transworld Publishers, 1993.
Addasiad Cymraeg gan = Welsh adaptation by: Helen Cooper.
Yr arth yn y cwtsh dan stâr by Helen Cooper. ISBN 0948930543. Published by Cymdeithas Lyfrau Ceredigion in 1997. Publication and catalogue information, links to buy online and reader comments.