Vichi, M., … Opitz, O. (Hrsg.). [ca. 1999]. Classification and Data Analysis : Theory and Application Proceedings of the Biannual Meeting of the Classification Group of Società Italiana di Statistica (SIS) Pescara, July 3–4, 1997 [Cd]. Berlin, Heidelberg: Springer Berlin Heidelberg. https://doi.org/10.1007/978-3-642-60126-2
ISO-690 (author-date, English)VICHI, Maurizio und OPITZ, Otto (Hrsg.). [cd]. 1999. Berlin, Heidelberg: Springer Berlin Heidelberg. ISBN 9783642601262.
Modern Language Association 9th editionVichi, M., und O. Opitz, Herausgeber. „Classification and Data Analysis : Theory and Application Proceedings of the Biannual Meeting of the Classification Group of Società Italiana di Statistica (SIS) Pescara, July 3–4, 1997“. Studies in Classification, Data Analysis, and Knowledge Organization, cd, Springer Berlin Heidelberg, 1999, https://doi.org/10.1007/978-3-642-60126-2.
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Vichi, M. und Opitz, O. (Hrsg.). (1999), „Classification and Data Analysis : Theory and Application Proceedings of the Biannual Meeting of the Classification Group of Società Italiana di Statistica (SIS) Pescara, July 3–4, 1997“, Studies in Classification, Data Analysis, and Knowledge Organization, Springer Berlin Heidelberg, Berlin, Heidelberg, verfügbar unter:https://doi.org/10.1007/978-3-642-60126-2.