Argraffiad Saesneg gwreiddiol = Original English edition : London : Andersen Press, 2002.
Addasiad Cymraeg gan = Welsh adaptation by : Dylan Williams.
Beth wyt ti'n ei gofio? by Paul Stewart. ISBN 1902416805. Published by Cymdeithas Lyfrau Ceredigion Gyf in 2002. Publication and catalogue information, links to buy online and reader comments.