Cyhoeddwyd y fersiwn Saesneg gwreiddiol = Original English version published: 1998.
Yn cynnwys mynegai = Includes index.
Economeg trwy ddiagramau : canllawiau adolygu : safon UG ac uwch by Andrew Gillespie. ISBN 9781908574282. Published by Atebol in 2012. Publication and catalogue information, links to buy online and reader comments.