Arg. Saesneg gwreiddiol = Original English ed.: Llundain: HarperCollins,1998.
Addasiad Cymraeg gan = Welsh adaptation by: Emily Huws.
Plisman Plod a'r olion traed by Enid Blyton. ISBN 1870394933. Published by Cyhoeddiadau Sain in 1998. Publication and catalogue information, links to buy online and reader comments.