Arg. Saesneg gwreiddiol = Original English ed.: [London]: Roper Press, 1989.
Addasiad Cymraeg gan = Welsh adaptation by: Angharad Tomos.
Paid siglo'r cwch! : stori y ddalfa wyrthiol by Marilyn Lashbrook. ISBN 1859941559. Published by Cyhoeddiadau'r Gair in 1998. Publication and catalogue information, links to buy online and reader comments.