Ymweliad yr hen foneddiges comedi drasig mewn tair act /
Dürrenmatt, Friedrich.
Jones, John Gwilym,1904-
Jones, G. L.(George Leonard),1937-
Thomas, Gwyn,1936-
Welsh Arts Council.
[Cardiff] Gwasg Prifysgol Cymru ar ran Cyngor Celfyddydau Cymru
1976
Translation of: 'Der Besuch der alten Dame'. Zürich : Verlag der Arche, 1963