Testun gwreiddiol gan = Original text by: Naomi King.
Testun diwygiedig gan = Revised text by: Jo Hartland.
Teitl clawr = Cover title.
Pryd, pam a sut i gwyno : hysbysebu tybaco = When, why and how to complain : tobacco advertising by Naomi King. ISBN 1856872289. Published by Hybu Iechyd Cymru in 1997. Publication and catalogue information, links to buy online and reader comments.