Gwaith Gruffudd ap Maredudd. 3, Canu amrywiol by Gruffudd ap Maredudd ap Dafydd. ISBN 9780947531133. Published by Canolfan Uwchefrydiau Cymreig a Cheltaidd, Prifysgol Cymru in 2007. Publication and catalogue information, links to buy online and reader comments.