Kuhnlein, H. V. (1997). Culture, environment, and food to prevent Vitamin A deficiency. INFDC.
Chicago (17e ed.) BronvermeldingKuhnlein, Harriet V. Culture, Environment, and Food to Prevent Vitamin A Deficiency. Ottawa: INFDC, 1997.
MLA (9e ed.) BronvermeldingKuhnlein, Harriet V. Culture, Environment, and Food to Prevent Vitamin A Deficiency. INFDC, 1997.
Let op: Deze citaties zijn niet altijd 100% accuraat.