Addasiad Cymraeg gan = Welsh adaptation by : Gwen Angharad Jones.
Argraffiad Saesneg gwreiddiol = Original English edition : London : Orchard Books, 2003.
Y bwystfil blewog by Sandra Glover. ISBN 1902416996. Published by Cymdeithas Lyfrau Ceredigion in 2004. Publication and catalogue information, links to buy online and reader comments.