•
Wales and the Reformation. (1997, University of Wales Press) •
Recovery, Reorientation and Reformation: Wales c.1415–1642, part of the
Oxford History of Wales (1987, Oxford University Press) •
Grym Tafodau Tan (1984, Gomer Press) •
Owain Glyndwr (1993, University of Wales Press) •
The Welsh Church from Conquest to Reformation (1962, University of Wales Press) •
Religion, Language and Nationality (1978, University of Wales Press) •
Glanmor Williams: A Life (2002, University of Wales Press) •
Harri Tudur a Chymru (Henry Tudor and Wales) - a bilingual book (1985, University of Wales Press) ==References==