Joint WHO/UNICEF Nutrition Support Programme. (1989). Nutrition learning packages. World Health Organization.
Citazione stile Chigago Style (17a edizione)Joint WHO/UNICEF Nutrition Support Programme. Nutrition Learning Packages. Geneva: World Health Organization, 1989.
Citatione MLA (8a ed.)Joint WHO/UNICEF Nutrition Support Programme. Nutrition Learning Packages. World Health Organization, 1989.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.