Não informado. (1977). Library Acquisitions: Practice and theory. Pergamon Press.
Chicago (17e ed.) BronvermeldingNão informado. Library Acquisitions: Practice and Theory. New York: Pergamon Press, 1977.
MLA (8e ed.) BronvermeldingNão informado. Library Acquisitions: Practice and Theory. Pergamon Press, 1977.
Let op: Deze citaties zijn niet altijd 100% accuraat.