Gesellschaft fuer Klassifikation, Balderjahn, I., Mathar, R., & Schader, M. (1998). Classification, data analysis, and data highways: Proceedings of the 21st annual conference of the Gesellschaft fuer Klassifikation e.V., University of Potsdam, March 12-14, 1997. Springer.
Παραπομπή σε μορφή Chicago (17η εκδ.)Gesellschaft fuer Klassifikation, Ingo Balderjahn, Rudolf Mathar, και Martin Schader. Classification, Data Analysis, and Data Highways: Proceedings of the 21st Annual Conference of the Gesellschaft Fuer Klassifikation E.V., University of Potsdam, March 12-14, 1997. Berlin: Springer, 1998.
Παραπομπή σε μορφή MLA (9th εκδ.)Gesellschaft fuer Klassifikation, et al. Classification, Data Analysis, and Data Highways: Proceedings of the 21st Annual Conference of the Gesellschaft Fuer Klassifikation E.V., University of Potsdam, March 12-14, 1997. Springer, 1998.