Cyhoeddwyd yn wreiddiol gan = Originally published by: Lion.
Addasiad Cymraeg gan = Welsh adaptation by: Siân Howys.
Llyfr llawn hwyl y goeden Nadolig by Lois Rock. ISBN 1859940625. Published by Cyhoeddiadau'r Gair in 1996. Publication and catalogue information, links to buy online and reader comments.