Chwarter canrif fesul : pum munud : dros sbectol /
Williams, John Roberts,1914-
Caernarfon : Gwasg Gwynedd,
2001.
Detholiad o sgyrsiau radio "Dros fy sbectol" = Anthology of radio talks from "Dros fy sbectol".
Dros fy sbectol (Radio program)
Radio programs