Sharp, J. R. (1965). Some Fundamentals of Information Retrieval. A. Deutsch.
Lua i Stíl Chicago (17ú heag.)Sharp, J. R. Some Fundamentals of Information Retrieval. London: A. Deutsch, 1965.
Lua MLA (9ú heag.)Sharp, J. R. Some Fundamentals of Information Retrieval. A. Deutsch, 1965.
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