Astudiaethau ar yr hengerdd = Studies in old Welsh poetry cyflwynedig i Syr Idris Foster
Foster, Idris Llewelyn,Sir.
Bromwich, Rachel.
Jones, R. Brinley.
Caerdydd [i.e. Cardiff] Gwasg Prifysgol Cymru
1978
Bibliography: p.x-xi. - Includes index
Includes 5 contributions in English
Welsh poetry