Ar y clawr: "Adroddiad a baratowyd gan Colin H. Williams a Jeremy Evas Adran y Gymraeg Prifysgol Cymru Caerdydd ar gyfer Bwrdd yr Iaith Gymraeg".
On cover: "A report prepared by Colin H. Williams and Jeremy Evas Department of Welsh University of Wales, Cardiff for the Welsh Language Board".
Y cynllun ymchwil cymunedol : crynodeb o ymchwil gymunedol yn yr Wyddgrug, Dyffryn Teifi, a Chymoedd Gwendraeth ac Aman = The community research project : a summary of community research conducted in by Colin H. Williams. ISBN 0952753359. Published by Bwrdd yr Iaith Gymraeg in 1997. Publication and catalogue information, links to buy online and reader comments.