Cita APA (7th ed.)

Spence, M., & Lewis, M. A. (2009). Health and growth. World Bank.

Cita Chicago (17th ed.)

Spence, Michael, i Maureen A. Lewis. Health and Growth. Washington, D.C: World Bank, 2009.

Cita MLA (9th ed.)

Spence, Michael, i Maureen A. Lewis. Health and Growth. World Bank, 2009.