Argraffiad Saesneg gwreiddiol = Original English edition : London : Macmillan Children's Books, 2001.
Addasiad Cymraeg gan = Welsh adaptation by : Gwen Redvers Jones.
O'r lludw by Michael Morpurgo. ISBN 1843231395. Published by Gomer in 2002. Publication and catalogue information, links to buy online and reader comments.