Argraffiad Saesneg gwreiddiol = Original English edition: Cheltenham : Stanley Thornes, 1996.
Addasiad Cymraeg gan = Welsh adaptation by: Ffion E. Kervegant.
Allwedd mathemateg 8². ISBN 1856445755. Published by Y Ganolfan Astudiaethau Addysg in 2001. Publication and catalogue information, links to buy online and reader comments.