Ovretveit, J. (1998). Evaluating health interventions: An introduction to evaluation of health treatments, services, policies and organizational interventions (First edition.). Open University Press.
Lua i Stíl Chicago (17ú heag.)Ovretveit, John. Evaluating Health Interventions: An Introduction to Evaluation of Health Treatments, Services, Policies and Organizational Interventions. First edition. Philadelphia: Open University Press, 1998.
Lua MLA (8ú heag.)Ovretveit, John. Evaluating Health Interventions: An Introduction to Evaluation of Health Treatments, Services, Policies and Organizational Interventions. First edition. Open University Press, 1998.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.