Argraffiad Saesneg gwreiddiol = Original English edition: London: Usborne Publishing, 1997.
Addasiad Cymraeg gan = Welsh adaptation by: Emily Huws.
Lift-the-flap book.
Ble mae Gwalch? by Heather Amery. ISBN 1859028322. Published by Gwasg Gomer in 2000. Publication and catalogue information, links to buy online and reader comments.