Traddodwyd y ddarlith hon yn Eisteddfod Genedlaethol Cymru, Meifod 2003 = This lecture was delivered at the National Eisteddfod of Wales, Meifod 2003.
Y genyn goroesi Cymreig : y 'diwylliant er gwaethaf pawb a phopeth' yn nwy iaith Cymru = The Welsh survival gene : the 'despite culture' in the two language communities of Wales by Jane Aaron. ISBN 1871726972. Published by Institute of Welsh Affairs in 2003. Publication and catalogue information, links to buy online and reader comments.