Arg. Saesneg gwreiddiol = Original English ed.: Llundain: Andersen Press, 1997.
Addasiad Cymraeg gan = Welsh adaptation by: Hedd a Non ap Emlyn.
Twrchyn a'r lleuad by Hiawyn Oram. ISBN 1855963264. Published by Dref Wen in 1998. Publication and catalogue information, links to buy online and reader comments.