Arg. Saesneg gwreiddiol = Original English ed.: London: Heinemann Educational, 1991.
Addasiad Cymraeg gan = Welsh adaptation by: Eirlys Roberts.
Bywyd y Cristion, yr unigolyn a'r gymdeithas by Gwyneth Windsor. ISBN 1856443507. Published by Canolfan Astudiaethau Addysg in 1997. Publication and catalogue information, links to buy online and reader comments.