World Bank & World Bank. (2005). A guide to competitive vouchers in health. World Bank.
芝加哥风格引文World Bank 与 World Bank. A Guide to Competitive Vouchers in Health. Washington, DC: World Bank, 2005.
MLA引文World Bank 与 World Bank. A Guide to Competitive Vouchers in Health. World Bank, 2005.
警告：这些引文格式不一定是100％准确.