Argraffiad Saesneg gwreiddiol = Original English edition : Oxford : Oxford University Press, 1998.
Addasiad Cymraeg gan = Welsh adaptation by : Mair Loader.
Shelley Holmes ditectif di-ail by Michaela Morgan. ISBN 0861744896. Published by Gwasg Addysgol Drake in 2002. Publication and catalogue information, links to buy online and reader comments.