Arg. Saesneg gwreiddiol = Original English ed.: Llandysul: Pont, 1999.
Addasiad Cymraeg gan = Welsh adaptation by: Juli Paschalis.
Fel fflam yn y nos by Michael Ponsford. ISBN 185902694X. Published by Gwasg Gomer in 1999. Publication and catalogue information, links to buy online and reader comments.