APA (7th ed.) Citation

Bollmann, P. (1981). Information retrieval research. Butterworths.

Chicago Style (17th ed.) Citation

Bollmann, P. Information Retrieval Research. London: Butterworths, 1981.

MLA (9th ed.) Citation

Bollmann, P. Information Retrieval Research. Butterworths, 1981.

Warning: These citations may not always be 100% accurate.