The early Christian monuments of Wales

von Nash-Williams, V. E. (Victor Erle), 1897-1955
Cardiff : University of Wales Press, 1950.
Umfang/Format: xxiii, 258 p. : illus., maps, 71 plates. ; 30 cm.

Shadowland : Wales 3000-1500 BC

von Burrow, Steve
Oakville, CT : Oxbow Books in association with the National Museum of Wales, 2011.