World Bank & World Bank. (2005). A guide to competitive vouchers in health. World Bank.
Citazione stile Chigago Style (17a edizione)World Bank e World Bank. A Guide to Competitive Vouchers in Health. Washington, DC: World Bank, 2005.
Citatione MLA (9a ed.)World Bank e World Bank. A Guide to Competitive Vouchers in Health. World Bank, 2005.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.