Cyhoeddwyd yn wreiddiol = Originally published: 2006.
Cwrs sylfaen : yr ail lyfr cwrs mewn cyfres o dri i oedolion sy'n dysgu Cymraeg = the second course book in a series of three for adults learning Welsh by Mark Stonelake. ISBN 9781860855184. Published by CBAC in 2010. Publication and catalogue information, links to buy online and reader comments.