Citazione Stile APA (7a Edizione)

Ashley, R. L. (1922). Early European civilization: A textbook for secondary schools. Macmillan.

Citazione stile Chigago Style (17a edizione)

Ashley, Roscoe Lewis. Early European Civilization: A Textbook for Secondary Schools. New York: Macmillan, 1922.

Citatione MLA (9a ed.)

Ashley, Roscoe Lewis. Early European Civilization: A Textbook for Secondary Schools. Macmillan, 1922.