Argraffiad Saesneg gwreiddiol = Original English edition : London : HarperCollins, 2000.
Addasiad Cymraeg gan = Welsh adaptation by : Siân Lewis.
Nadolig llawen y clwb cysgu cŵl by Sue Mongredien. ISBN 1843232995. Published by Gomer in 2003. Publication and catalogue information, links to buy online and reader comments.