Arg. Saesneg gwreiddiol = Original English ed.:Cheltenham:Stanley Thornes,1996.
Includes index.
Dylunio a thechnoleg cyfnod allweddol 2 : llyfr y disgybl : meistrgopiau by Kate Bennington. ISBN 1856444155. Published by Canolfan Astudiaethau Addysg in 1999. Publication and catalogue information, links to buy online and reader comments.