Arg. Saesneg gwreiddiol = Original English ed: Oxford: Oxford University Press, 1992.
Yn cynnwys mynegai = Includes index.
Datblygwyd argraffiad Cymraeg y gyfres gan Adran Gymraeg Cyd-bwyllgor Addysg Cymru = Welsh edition of series developed by the Welsh Department of the Welsh Joint Education Committee.
Allwedd i ddaearyddiaeth : [Cyfnod Alleddol 3] by Richard Kemp. ISBN 019833480X. Published by Gwasag Prifysgol Rhydychen in 1994. Publication and catalogue information, links to buy online and reader comments.