Não informado. (1978). Current Bibliography Directory of the Arts and Sciences. Institute for Scientific Information.
Chicago (17e ed.) BronvermeldingNão informado. Current Bibliography Directory of the Arts and Sciences. Philadelphia, Pa: Institute for Scientific Information, 1978.
MLA (8e ed.) BronvermeldingNão informado. Current Bibliography Directory of the Arts and Sciences. Institute for Scientific Information, 1978.
Let op: Deze citaties zijn niet altijd 100% accuraat.