Argraffiad Saesneg gwreiddiol = Original English edition: London : Addison Wesley Longman, 1994.
Addasiad Cymraeg gan = Welsh adaptation by: Emily Huws.
Sbonc! sbonc! by Mick Gowar. ISBN 1860852238. Published by Uned Iaith Genedlaethol Cymru in 1997. Publication and catalogue information, links to buy online and reader comments.