Cyhoeddwyd ar ran Pwyllgor Iaith a LlĂȘn Bwrdd Gwybodau Celtaidd Prifysgol Cymru = Published on behalf of the Language and Literature Committee of the University of Wales Board of Celtic Studies.
Iaith lafar Brycheiniog : astudiaeth o'i ffonoleg a'i morffoleg by Glyn E. Jones. ISBN 0708316409. Published by Gwasg Prifysgol Cymru in 2000. Publication and catalogue information, links to buy online and reader comments.