Arg. Saesneg gwreiddiol = Original English ed: Murray in association with Inner London Education Authority, 1989.
"Cyhoeddir ... fel rhan o Raglen Ddatblygu Addysg Hyblyg a ariennir gan ADAG ac a weinyddir yng Nghymru gan Gyd-bwyllgor Addysg Cymru".
Grymoedd a mudiant. Published by CBAC in 1992. Publication and catalogue information, links to buy online and reader comments.