Não informado. (1971). FDA drug bulletin. Food and Drug Administration, Department. of Health, Education and Welfare.
Chicago (17e ed.) BronvermeldingNão informado. FDA Drug Bulletin. Rockville, Md: Food and Drug Administration, Department. of Health, Education and Welfare, 1971.
MLA (8e ed.) BronvermeldingNão informado. FDA Drug Bulletin. Food and Drug Administration, Department. of Health, Education and Welfare, 1971.
Let op: Deze citaties zijn niet altijd 100% accuraat.