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.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)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.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)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.