Arg. Saesneg gwreiddiol = Original English ed.: London: Levinson Books, 1997.
Addasiad Cymraeg gan = Welsh adaptation by: Emily Huws.
Stori'r Nadolig : gyda model o olygfa'r Geni by Dawn Apperley. ISBN 1859026176. Published by Gwasg Gomer in 1998. Publication and catalogue information, links to buy online and reader comments.