University of Chicago. Graduate Library School, Bookstein, A., & Swanson, D. R. (1972). Operations research; implications for libraries: The thirty-fifth annual conference of the Graduate Library School, August 2-4, 1971. University of Chicago Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)University of Chicago. Graduate Library School, Abraham Bookstein, و Don Richard Swanson. Operations Research; Implications for Libraries: The Thirty-fifth Annual Conference of the Graduate Library School, August 2-4, 1971. Chicago: University of Chicago Press, 1972.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)University of Chicago. Graduate Library School, et al. Operations Research; Implications for Libraries: The Thirty-fifth Annual Conference of the Graduate Library School, August 2-4, 1971. University of Chicago Press, 1972.