World Health Organization. Study Group on the Evaluation of Recent Changes in the Financing of Health Services. (1993). Evaluation of recent changes in the financing of health services: Report of a WHO Study Group. World Health Organization.
Παραπομπή σε μορφή Chicago (17η εκδ.)World Health Organization. Study Group on the Evaluation of Recent Changes in the Financing of Health Services. Evaluation of Recent Changes in the Financing of Health Services: Report of a WHO Study Group. Geneva: World Health Organization, 1993.
Παραπομπή σε μορφή MLA (8th εκδ.)World Health Organization. Study Group on the Evaluation of Recent Changes in the Financing of Health Services. Evaluation of Recent Changes in the Financing of Health Services: Report of a WHO Study Group. World Health Organization, 1993.