Williams, Gwyn A. (1982). The Welsh in their History. Croom Helm. ISBN 0-7099-3651-6. "The Flemish colonists in Wales: BBC website. Retrieved 17 August 2006"...
A., The Welsh in their History, published 1982 by Croom Helm, ISBN 0-7099-3651-6 Royal Commission on the Ancient and Historical Monuments of Wales Roman...