Addasiad Cymraeg o = Welsh adaptation of: Oxford maths zone.
Argraffiad Saesneg gwreiddiol = Original English edition: Oxford : Oxford University Press, 2002.
Yr haen fathemateg. Blwyddyn 6, Llyfr craidd. ISBN 0861748050. Published by Gwasg Addysgol Drake in 2005. Publication and catalogue information, links to buy online and reader comments.