"Cyhoeddwyd mewn cydweithrediad â Chymdeithas Twm Siôn Cati" - tu fewn y clawr = inside cover.
Twm Siôn Cati by Meinir Wyn Edwards. ISBN 9781847711564. Published by Y Lolfa in 2009. Publication and catalogue information, links to buy online and reader comments.