Arg. Saesneg gwreiddiol = Original English ed.: London: Ventura Publishing, 1980.
Argraffiad cyntaf Cymraeg mewn clawr meddal = First Welsh paperback publication: 1998.
Addasiad Cymraeg gan = Welsh adaptation by: Dilwen M. Evans.
Ble mae Smot? by Eric Hill. ISBN 1859025382. Published by Gwasg Gomer in 1998. Publication and catalogue information, links to buy online and reader comments.