Wigle, D. T. (2003). Child health and the environment. Oxford University.
Cita Chicago (17th ed.)Wigle, Donald T. Child Health and the Environment. New York: Oxford University, 2003.
Cita MLA (8th ed.)Wigle, Donald T. Child Health and the Environment. Oxford University, 2003.
Atenció: Aquestes cites poden no estar 100% correctes.