World Bank & Preker, A. S. (2007). Public ends, private means: Strategic purchasing of health services. World Bank.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিWorld Bank এবং Alexander S. Preker. Public Ends, Private Means: Strategic Purchasing of Health Services. Washington, D.C.: World Bank, 2007.
M.L.A (9 ম সংস্করণ) উদ্ধৃতিWorld Bank এবং Alexander S. Preker. Public Ends, Private Means: Strategic Purchasing of Health Services. World Bank, 2007.