Arg Saesneg gwreiddiol = Original English ed: Harper & Row, 1985.
Addasiad Cymraeg gan Berwyn Prys Jones = Welsh adaptation by Berwyn Prys Jones.
Mae germau'n fy ngwneud i'n sal! by Melvin Berger. ISBN 0904836452. Published by Ivan Corbett in 1990. Publication and catalogue information, links to buy online and reader comments.