Argraffiad Saesneg gwreiddiol = Original English edition : London : Andersen Press, 2006.
Addasiad Cymraeg gan = Welsh adaptation by : Dylan Williams.
Slumyn dwl by Jeanne Willis. ISBN 1845120450. Published by Cymdeithas Lyfrau Ceredigion Gyf in 2006. Publication and catalogue information, links to buy online and reader comments.