Arg. Saesneg gwreiddiol = Original English ed.: Llundain: Collins Educational, 1993.
Yn cynnwys mynegai = Includes index.
Addasiad Cymraeg gan = Welsh adaptation by: Ken a Sian Owen.
Trydan a magnetedd : oed 7-12 : canllaw athrawon. ISBN 185596371X. Published by Gwasg y Dref Wen in 1998. Publication and catalogue information, links to buy online and reader comments.