Chen, C. (1976). Applications of operations research models to libraries: A case study of the use of monographs in the Francis A. Countway Library of Medicine, Harvard University. MIT Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Chen, Ching-chih. Applications of Operations Research Models to Libraries: A Case Study of the Use of Monographs in the Francis A. Countway Library of Medicine, Harvard University. Cambridge, Mass.: MIT Press, 1976.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Chen, Ching-chih. Applications of Operations Research Models to Libraries: A Case Study of the Use of Monographs in the Francis A. Countway Library of Medicine, Harvard University. MIT Press, 1976.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.