Hywel Dda = Hywel the Good /
Stevens, Catrin.
Welsh Books Council.
Llandysul : Gwasg Gomer,
c2004.
Cyhoeddir fel rhan o gyfres gomisiwn 'Cip ar Gymru' Cyngor Llyfrau Cymru = Published in the 'Wonder Wales' series commissioned by the Welsh Books Council.
Hywel Dda.