Argraffiad Saesneg gwreiddiol = Original English edition: Harlow :Longman, 1994.
Addasiad Cymraeg gan = Welsh adaptation by: Emily Huws.
Llyncu llyffant by Martin Waddell. ISBN 1860852203. Published by Uned Iaith Genedlaethol Cymru CBAC in 1997. Publication and catalogue information, links to buy online and reader comments.