Citazione Stile APA (7a Edizione)

Strong, C. F. (1954). The world of the middle ages: From the division of Charlemagne's empire in the ninth century to the Renaissance in the fifteenth century. Univ. of London Press.

Citazione stile Chigago Style (17a edizione)

Strong, C. F. The World of the Middle Ages: From the Division of Charlemagne's Empire in the Ninth Century to the Renaissance in the Fifteenth Century. London: Univ. of London Press, 1954.

Citatione MLA (9a ed.)

Strong, C. F. The World of the Middle Ages: From the Division of Charlemagne's Empire in the Ninth Century to the Renaissance in the Fifteenth Century. Univ. of London Press, 1954.