Cita APA

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

Chicago Edition Citation

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

Cita MLA

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