Arolygiad goruchwylio effeithiol ar y Gwasanaeth Prawf Cenedlaethol ar gyfer Cymru a Lloegr : adroddiad ar: Ardal Brawf Gogledd Cymru.
Great Britain.HM Inspectorate of Probation.
[London] : HM Inspectorate of Probation,
2005.
Probation