Argraffiad Saesneg gwreiddiol = Original English edition: London : Addison Wesley Longman, 1994.
Addasiad Cymraeg gan = Welsh adaptation by: Dylan Williams.
Taith falŵn chwil by Errol Lloyd. ISBN 1860852394. Published by Uned Iaith Genedlaethol Cymru in 1997. Publication and catalogue information, links to buy online and reader comments.