Putnam, G. H. (1897). Books and their makers during the middle ages: A study of the conditions of the production and distribution of literature from the fall of the Roman empire to the close of the seventeenth century. G.P. Putnam's sons.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Putnam, George Haven. Books and Their Makers During the Middle Ages: A Study of the Conditions of the Production and Distribution of Literature from the Fall of the Roman Empire to the Close of the Seventeenth Century. New York ; London: G.P. Putnam's sons, 1897.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Putnam, George Haven. Books and Their Makers During the Middle Ages: A Study of the Conditions of the Production and Distribution of Literature from the Fall of the Roman Empire to the Close of the Seventeenth Century. G.P. Putnam's sons, 1897.