Argraffiad Saesneg gwreiddiol = Original English edition: London : Orchard Books, 2000.
Addasiad Cymraeg gan = Welsh adaptation by: Emily Huws.
Y peth gorau yn y byd by Nicola Moon. ISBN 1859028381. Published by Gwasg Gomer in 2000. Publication and catalogue information, links to buy online and reader comments.