Arg Saesneg gwreiddiol = Original English ed: [Hove]: Wayland, 1989.
Llyfryddiaeth: p47. - Yn cynnwys mynegai = Bibliography: p47. - Includes index.
Magnetau by Ed Catherall. ISBN 1855960516. Published by Dref Wen in 1992. Publication and catalogue information, links to buy online and reader comments.