Arg. Saesneg gwreiddiol = Original English ed: London: Harcourt Brace Jovanovich, 1992.
Cyhoeddwyd dan nawdd Cynllun Adnoddau Cyd-bwyllgor Addysg Cymru = Published under the auspices of the Welsh Joint Education Committee Resources Project.
Teitl clawr = Cover title.
Mathemateg HBJ. ISBN 0003005747. Published by Collins Educational in 1995. Publication and catalogue information, links to buy online and reader comments.