Arg Saesneg gwreiddiol = Original English ed: [S.l.]: Two-can, 1990.
Yn cynnwys mynegai = Includes index.
Y llyfr llythrennau : cael hwyl â llythrennau by Ivan Bulloch. ISBN 1855960443. Published by Dref Wen in 1992. Publication and catalogue information, links to buy online and reader comments.