Arg. Saesneg gwreiddiol = Original English ed.: Cambridge: Cambridge University Press, 1984.
Uwchben teitl clawr = At head of cover title: Rhaglen Ddatblygu Addysg Hyblyg.
Cyfnewid a chludiant. Published by Uned Iaith Genedlaethol Cymru CBAC in 1996. Publication and catalogue information, links to buy online and reader comments.