Harri Hyll yr Ail /
Morgan, Gwyn.
Owen, Dai.
Welsh Joint Education Committee.
Caerdydd : Dref Wen,
1996.
Cyhoeddwyd dan nawdd Cynllun Llyfrau Darllen Cyd-bwyllgor Addysg Cymru = Published under the auspices of the Welsh Joint Education Committee Reading Book Scheme.