Argraffiad Saesneg gwreiddiol = Original English edition : London : Macmillan Children's Books, 2002.
Llyfr anwesu = A fondle book.
Addasiad Cymraeg gan = Welsh adaptation by : Sioned Lleinau.
Yr arth eira by Piers Harper. ISBN 1843233851. Published by Gomer in 2004. Publication and catalogue information, links to buy online and reader comments.