Arg. Saesneg gwreiddiol = Original English ed.: London: Heinemann, [1991].
Ar ben teitl clawr = At head of cover title: Ffrangeg ar gyfer byd gwaith.
Allez-y! by Julia Batters. ISBN 1856442861. Published by Canolfan Astudiaethau Addysg in 1996. Publication and catalogue information, links to buy online and reader comments.