Koops, W. R. H., & Wieder, J. (1977). IFLA's First Fifty Years: Achievement and Challenge in International Librarianship. Berlin/Boston: Walter de Gruyter GmbH.
Chicago Style CitationKoops, Willem Roelf Henderikus., and Joachim Wieder. IFLA's First Fifty Years: Achievement and Challenge in International Librarianship. Berlin/Boston: Walter de Gruyter GmbH, 1977.
MLA CitationKoops, Willem Roelf Henderikus., and Joachim Wieder. IFLA's First Fifty Years: Achievement and Challenge in International Librarianship. Berlin/Boston: Walter de Gruyter GmbH, 1977.
Warning: These citations may not always be 100% accurate.