Arg Saesneg gwreiddiol = Original English ed: London : HarperCollins, 1994.
Teitl clawr = Cover title.
Testun a lluniau ar y cloriau tu mewn = Text and illustrations on inside covers.
Dyma ni'n mynd i'r gwely by Nick Butterworth. ISBN 1855961512. Published by Dref Wen in 1995. Publication and catalogue information, links to buy online and reader comments.