Cyhoeddiad Saesneg gwreiddiol = Original English ed.: Oxford: Oxford University Press, 1994/6.
Cyhoeddwyd mewn cydweithrediad รข Gwasg Prifysgol Rhydychen = Published in conjunction with Oxford University Press.
OBNB doesn't sell books, but you may be able to find a copy at one of these websites:
Allwedd i ddaearddiaeth. 5. ISBN 1860851371. Published by Uned Iaith Genedlaethol Cymru CBAC in 1997. Publication and catalogue information, links to buy online and reader comments.
