1. Otfice ot PopuLlationi CcnsuLscs anid Surve\s. Classification of-surgical operationls,1986
2. Provident Associatioti. RB 'PA schedule of proceduires;159-62.,1989
3. Medical audit data: counting is not enough,1990
4. Neccssity for stirgical audit. BAiI7;Dttdlcv, H.A.F.,1974
5. Smith 1F. AMedical aLtdit: closing the feedback loop is vital. B,1990