Não informado. (1971). Food and Nutrition. Food and Nutrition Service.
Chicago (17e ed.) BronvermeldingNão informado. Food and Nutrition. Washington: Food and Nutrition Service, 1971.
MLA (8e ed.) BronvermeldingNão informado. Food and Nutrition. Food and Nutrition Service, 1971.
Let op: Deze citaties zijn niet altijd 100% accuraat.