Arg. Saesneg gwreiddiol = Original English ed: Cambridge: Cambridge University Press, 1995.
Text on inside back cover.
SMP 11-16. ISBN 1860851355. Published by Uned Iaith Genedlaethol Cymru, Cyd-Bwyllgor Addysg Cymru in 1995. Publication and catalogue information, links to buy online and reader comments.