Não informado. (1977). Library Acquisitions: Practice and theory. Pergamon Press.
Chicago-referens (17:e uppl.)Não informado. Library Acquisitions: Practice and Theory. New York: Pergamon Press, 1977.
MLA-referens (8:e uppl.)Não informado. Library Acquisitions: Practice and Theory. Pergamon Press, 1977.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.
