Não informado. (1967). British medical index. British Council, Medical Department.
Chicago (17e ed.) BronvermeldingNão informado. British Medical Index. London: British Council, Medical Department, 1967.
MLA (8e ed.) BronvermeldingNão informado. British Medical Index. British Council, Medical Department, 1967.
Let op: Deze citaties zijn niet altijd 100% accuraat.