Argraffiad Saesneg gwreiddiol = Original English edition : London : HarperCollins, 2001.
Addasiad Cymraeg gan = Welsh adaptation by : Gwynne Williams.
Newydd da! newydd drwg! by Colin McNaughton. ISBN 1855965135. Published by Gwasg y Dref Wen. Publication and catalogue information, links to buy online and reader comments.