APA (7th ed.) Citation

International Business Machines Corporation. (1971). An introduction to information retrieval ([1st ed.). [publisher not identified].

Chicago Style (17th ed.) Citation

International Business Machines Corporation. An Introduction to Information Retrieval. [1st ed. White Plains, N.Y.: [publisher not identified], 1971.

MLA (9th ed.) Citation

International Business Machines Corporation. An Introduction to Information Retrieval. [1st ed. [publisher not identified], 1971.