APA (7th ed.) Citation

Stevens, N. D. (1961). A Comparative study of three systems of information retrieval. Graduate School of Library Service, Rutgers, the State University.

Chicago Style (17th ed.) Citation

Stevens, Norman D. A Comparative Study of Three Systems of Information Retrieval. New Brunswick, N. J: Graduate School of Library Service, Rutgers, the State University, 1961.

MLA (9th ed.) Citation

Stevens, Norman D. A Comparative Study of Three Systems of Information Retrieval. Graduate School of Library Service, Rutgers, the State University, 1961.