Argraffiad Saesneg gwreiddiol = Original English edition : London : Hodder Children's Books, 2000.
Addasiad Cymraeg gan = Welsh adaptation by : Siân Lewis.
Help! ble mae Enfys? by Margaret Ryan. ISBN 0863819303. Published by Gwasg Carreg Gwalch in 2004. Publication and catalogue information, links to buy online and reader comments.