Yn cynnwys mynegai = Includes index.
CD-ROM fel cymorth i'r athro hefyd ar gael = Teacher support CD-ROM also available.
Argraffiad Saesneg gwreiddiol = Original English edition : Cheltenham : Nelson Thornes, 2002.
Cemeg by Lawrie Ryan. ISBN 1855966964. Published by Dref Wen in 2005. Publication and catalogue information, links to buy online and reader comments.