Bywyd ac amserau Llywelyn ap Gruffydd : llyfryddiaeth : Llywelyn ap Gruffydd, his life and times : a bibliography /
Gwynedd Library Service.
Jones, Alun,1951-
[Caernarfon] : Gwasanaeth Llyfrgell Gwynedd,
1982.
Includes index.
Llywelyn ap Gruffydd, -1282.