Cyhoeddwyd gyntaf: Medi 2000 = First published: September 2000.
Gwybodaeth o'r clawr = Information from cover.
Isafswm cyflog cenedlaethol : canllaw byr i gyflogeion. Published by Adran Masnach a Diwydiant in 2003. Publication and catalogue information, links to buy online and reader comments.