Trin data.
Clissold, Caroline.
Jones, Lynwen Rees.
University of Wales, Aberystwyth.Centre for Educational Studies.
Aberystwyth : CAA,
c2010.
"Adnoddau addysgu mathemateg y gellir eu llungopïo" - t.p.
"Adnoddau addysgu Mathemateg y gellir eu haddasu, caniateir llungopïo" - ar y clawr = on cover.
Arg. Saesneg gwreiddiol = Original English ed.: London : A. & C. Black, 2009.
Statistics
Mathematics