Original English ed. published: Dublin: Dublin Institute for Advanced Studies, 1980.
Dysgu Gwyddeleg : gwersi Gwyddeleg Modern ynghyd ag allweddi'r ymarferion a geirfa by Micheál Ó Siadhail. ISBN 0903878208. Published by Adran y Gymraeg, Prifysgol Cymru Aberystwyth in 1998. Publication and catalogue information, links to buy online and reader comments.