Arg. Saesneg gwreiddiol = Original English ed.: London: Inner London Education Authority, 1987.
Cyfieithiad Cymraeg gan = Welsh translation by: Elfrys Jones.
Rhai manylion teitl o'r clawr = Some title details taken from cover.
Gwyddoniaeth trwy brofiad. Thema 4, Cyfathrebu. ISBN 0863837271. Published by Gomer mewn cydweithrediad â Heinemann Educational Books in 1991. Publication and catalogue information, links to buy online and reader comments.