Gesellschaft fuer Klassifikation. Jahrestagung, Decker, R., & Gaul, W. (2000). Classification and information processing at the turn of the millenium: Proceedings of the 23rd Annual Conference of the Gesellschaft fuer Klassifikation e.V., University of Bielefeld, March 10-12, 1999. Springer.
Παραπομπή σε μορφή Chicago (17η εκδ.)Gesellschaft fuer Klassifikation. Jahrestagung, Reinhold Decker, και W. Gaul. Classification and Information Processing at the Turn of the Millenium: Proceedings of the 23rd Annual Conference of the Gesellschaft Fuer Klassifikation E.V., University of Bielefeld, March 10-12, 1999. Berlin: Springer, 2000.
Παραπομπή σε μορφή MLA (9th εκδ.)Gesellschaft fuer Klassifikation. Jahrestagung, et al. Classification and Information Processing at the Turn of the Millenium: Proceedings of the 23rd Annual Conference of the Gesellschaft Fuer Klassifikation E.V., University of Bielefeld, March 10-12, 1999. Springer, 2000.