Cita APA (7th ed.)

World Bank & World Bank. (2005). A guide to competitive vouchers in health. World Bank.

Cita Chicago (17th ed.)

World Bank i World Bank. A Guide to Competitive Vouchers in Health. Washington, DC: World Bank, 2005.

Cita MLA (9th ed.)

World Bank i World Bank. A Guide to Competitive Vouchers in Health. World Bank, 2005.