Arg. Saesneg gwreiddiol = Original English ed.: Llundain: Orchard Books, 1998.
Addasiad Cymraeg gan = Welsh adaptation by: Huw Ceiriog a Diana Jones.
Cyffro yn y cefnfor by Giles Andreae. ISBN 1902416031. Published by Cymdeithas Lyfrau Ceredigion in 1998. Publication and catalogue information, links to buy online and reader comments.