Cyhoeddir fel rhan o gyfres gomisiwn 'Cip ar Gymru' Cyngor Llyfrau Cymru = Published in the 'Wonder Wales' series commissioned by the Welsh Books Council.
William Williams Pantycelyn by Iestyn Roberts. ISBN 1843233355. Published by Gwasg Gomer in 2004. Publication and catalogue information, links to buy online and reader comments.