Arg. Saesneg gwreiddiol = Original English ed.: Exeter: CIMT, University of Exeter, [1992?].
Addasiad Cymraeg gan = Welsh adaptation by: Delyth Ifan.
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Rhaglen gyfoethogi mathemateg. Llyfr ymarfer : blwyddyn 10 (modwl 1 a modwl 2). ISBN 1860853633. Published by Uned Iaith Genedlaethol Cymru CBAC in 1999. Publication and catalogue information, links to buy online and reader comments.
