Argraffiad Saesneg gwreiddiol = Original English edition: London : Orchard, 2000.
Addasiad Cymraeg gan = Welsh adaptation by: Dylan Williams.
Un drwg drwg yw Edwyn by Alan Durant. ISBN 1902416406. Published by Cymdeithas Lyfrau Ceredigion in 2000. Publication and catalogue information, links to buy online and reader comments.