Stevens, N. D. (1961). A comparative study of three systems of information retrieval. Graduate School of Library Service, Rutgers, The State University.
芝加哥风格引文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引文Stevens, Norman D. A Comparative Study of Three Systems of Information Retrieval. Graduate School of Library Service, Rutgers, The State University, 1961.
警告：这些引文格式不一定是100％准确.