Cita APA (7a ed.)

Sharp, J. R. (1965). Some fundamentals of information retrieval. Andre Deutsch.

Cita Chicago Style (17a ed.)

Sharp, John R. Some Fundamentals of Information Retrieval. London: Andre Deutsch, 1965.

Cita MLA (8a ed.)

Sharp, John R. Some Fundamentals of Information Retrieval. Andre Deutsch, 1965.