Sain /
Nyman, Gabrielle.
Breeds, Graham.
Evans, Geraint M.
National Language Unit of Wales.
Welsh Joint Education Committee.Cynllun Adnoddau.
Caerdydd : Uned Iaith Genedlaethol Cymru CBAC,
1995.
Cyhoeddwyd dan nawdd Cynllun Adnoddau Cyd-bwyllgor Addysg Cymru = Published under the auspices of the Welsh Joint Education Committee Resources Project
Arg. Saesneg gwreiddiol = Original English ed: Harlow: Longman, 1992
Teitl clawr = Cover title
Sound