APA Edition Citation

Van Rijsbergen, C. J. Information retrieval (2nd. ed.). Butterworths.

Chicago Edition Citation

Van Rijsbergen, C. J. Information Retrieval. 2nd. ed. London: Butterworths.

MLA Edition Citation

Van Rijsbergen, C. J. Information Retrieval. 2nd. ed. Butterworths.

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