Cyhoeddwyd ar ran Pwyllgor Iaith a LlĂȘn Bwrdd Gwybodau Celtaidd Prifysgol Cymru = Published on behalf of the Language and Literature Committee of the Board of Celtic Studies, University of Wales.
Ymborth yr enaid : gyda rhagymadrodd a nodiadau gan R. Iestyn Daniel. ISBN 0708312837. Published by Gwasg Prifysgol Cymru in 1995. Publication and catalogue information, links to buy online and reader comments.