Arg. Saesneg gwreiddiol = Original English ed.: Llundain: picadilly Press, [1988?].
Addasiad Cymraeg gan = Welsh adaptation by: Rhian Pierce Jones.
Croeso, Ms Swyn by Terence Blacker. ISBN 1859026044. Published by Gwasg Gomer in 1999. Publication and catalogue information, links to buy online and reader comments.