Παραπομπή σε μορφή APA (7η εκδ.)

Gesellschaft fuer Klassifikation, Klar, R., & Opitz, O. (1997). Classification and knowledge organization: Proceedings of the 20th annual conference of the Gesellschaft fuer Klassifikation e.V., University of Freiburg, March 6-8, 1996. Springer.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Gesellschaft fuer Klassifikation, Ruediger Klar, και Otto Opitz. Classification and Knowledge Organization: Proceedings of the 20th Annual Conference of the Gesellschaft Fuer Klassifikation E.V., University of Freiburg, March 6-8, 1996. Berlin: Springer, 1997.

Παραπομπή σε μορφή MLA (9th εκδ.)

Gesellschaft fuer Klassifikation, et al. Classification and Knowledge Organization: Proceedings of the 20th Annual Conference of the Gesellschaft Fuer Klassifikation E.V., University of Freiburg, March 6-8, 1996. Springer, 1997.