Argraffiad Saesneg gwreiddiol = Original English edition : London : Piccadilly Press, 2003.
Addasiad Cymraeg gan = Welsh adaptation by : Hedd a Non ap Emlyn.
Waldo'n ennill y dydd by Sally Chambers. ISBN 1855966581. Published by Gwasg y Dref Wen in 2005. Publication and catalogue information, links to buy online and reader comments.