Arg. Saesneg gwreiddiol = Original English ed.: London: Heinemann, 1991.
Addasiad Cymraeg gan = Welsh adaptation by: Lila Piette.
Allez-y! : Ffrangeg ar gyfer byd gwaith by Julia Batters. ISBN 185644287X. Published by Canolfan Astudiaethau Addysg in 1996. Publication and catalogue information, links to buy online and reader comments.