Cita APA (7a ed.)

Fairthorne, R. A. (1961). Towards information retrieval. Butterworths.

Cita Chicago Style (17a ed.)

Fairthorne, Robert Arthur. Towards Information Retrieval. London: Butterworths, 1961.

Cita MLA (9a ed.)

Fairthorne, Robert Arthur. Towards Information Retrieval. Butterworths, 1961.