Arg. Saesneg gwreiddiol = Original English ed.: Llundain: Andersen Press, 1998.
Addasiad Cymraeg gan = Welsh adaptation by: Dylan Williams.
Lluniau ar y cloriau tu mewn = Illustrations on inside covers.
Hmm- by Colin McNaughton. ISBN 1902416023. Published by Cymdeithas Lyfrau Ceredigion in 1998. Publication and catalogue information, links to buy online and reader comments.