Arg. Saesneg gwreiddiol = Original English ed: A. & C. Black, 1987.
Yn cynnwys mynegai = Includes index.
Addasiad Cymraeg gan = Welsh adaptation by: Berwyn Prys Jones.
Papur by Annabelle Dixon. ISBN 0904836541. Published by Ivan Corbett in 1990. Publication and catalogue information, links to buy online and reader comments.