Citação norma APA

Williams, T., Moon, A., & Williams, M. (1990). Food, environment, and health: A guide for primary school teachers. World Health Organization.

Citação norma Chicago

Williams, Trefor, Alysoun Moon, and Margaret Williams. Food, Environment, and Health: A Guide for Primary School Teachers. Geneva: World Health Organization, 1990.

Citação norma MLA

Williams, Trefor, et al. Food, Environment, and Health: A Guide for Primary School Teachers. World Health Organization, 1990.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.