Owen, J.M. (2007) Program Evaluation: Forms and Approaches. Third Edition. Allen and Unwin. Sydney, and Guildford Press, New York.
Owen, J.M. (2007) Making Policy Interventions more effective: the case for accountability up and accountability down. Chapter 10 in Bemelmans-Videc, M., Lonsdale, J. & Perrin, B (Eds) Making Accountability Work: Dilemmas for Evaluation and for Audit. Transaction Publishers.