See Egan, D and James, R (2004) 'An Evaluation for the General Teaching Council for Wales of the Professional Development Pilot Projects 2001–2002', Cardiff: General Teaching Council for Wales.
Gwerthusiad o Brosiectau Peilot datblygiad proffesiynol ar gyfer Cyngor Addysgu Cyffredinol Cymru 2001–2002', Caerdydd: Cyngor Addysgu Cyffredinol Cymru.