World Bank & Preker, A. S. (2007). Public ends, private means: Strategic purchasing of health services. World Bank.
Chicago-čujuhus (17. p.)World Bank juo Alexander S. Preker. Public Ends, Private Means: Strategic Purchasing of Health Services. Washington, D.C.: World Bank, 2007.
MLA-čujuhus (9. p.)World Bank juo Alexander S. Preker. Public Ends, Private Means: Strategic Purchasing of Health Services. World Bank, 2007.
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