Argraffiad Saesneg gwreiddiol = Original English edition: London : Picadilly Press, 2000.
Trosiad Cymraeg gan = Welsh adaptation by: Hedd a Non ap Emlyn.
Tomi'n ceisio cysgu by Sally Chambers. ISBN 1855964546. Published by Gwasg y Dref Wen in 2001. Publication and catalogue information, links to buy online and reader comments.