"Traddodwyd y ddarlith hon yng Nghyfarfod Cyffredinol Blynyddol Cymdeithas Gelfyddydau Gogledd Cymru ... Medi 21, 1990 = This lecture was delivered at the Annual General Meeting of the North Wales Arts Association ... September 21, 1990".
Llun ar y clawr cefn = Port on back cover.
Ein trydedd iaith? = Our third language? by A. J. Heward Rees. Published by Cymdeithas Gelfyddydau Gogledd Cymru in 1991. Publication and catalogue information, links to buy online and reader comments.