Van Rijsbergen, C. J. Information retrieval (2nd. ed.). Butterworths.
Chicago Edition CitationVan Rijsbergen, C. J. Information Retrieval. 2nd. ed. London: Butterworths.
MLA Edition CitationVan Rijsbergen, C. J. Information Retrieval. 2nd. ed. Butterworths.
Warning: These citations may not always be 100% accurate.