APA (7th ed.) Citation

Van Rijsbergen, C. J. (1975). Information retrieval. Butterworths.

Chicago Style (17th ed.) Citation

Van Rijsbergen, C. J. Information Retrieval. London ; Boston: Butterworths, 1975.

MLA (8th ed.) Citation

Van Rijsbergen, C. J. Information Retrieval. Butterworths, 1975.

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