Arg. Saesneg gwreiddiol = Original English ed.: London: Franklin Watts, 1997.
Addasiad Cymraeg gan = Welsh adaptation by: Juli Paschalis.
Rwy'n medru gwn\̈tio by Susan Niner Janes. ISBN 0861741048. Published by Gwasg Addysgol Drake in 1997. Publication and catalogue information, links to buy online and reader comments.