APA (7th ed.) Citation

Koops, W. R. H., & Wieden, J. (1977). IFLA's first fifty years: Achievement and challenge in international librarianship. Verlag Dokumentation.

Chicago Style (17th ed.) Citation

Koops, Willem R. H., and Joachim Wieden. IFLA's First Fifty Years: Achievement and Challenge in International Librarianship. Munchen: Verlag Dokumentation, 1977.

MLA (9th ed.) Citation

Koops, Willem R. H., and Joachim Wieden. IFLA's First Fifty Years: Achievement and Challenge in International Librarianship. Verlag Dokumentation, 1977.