Citazione Stile APA (7a Edizione)

Ashley, R. L. (1918). Modern European civilization: A textbook for secondary schools. Macmillan.

Citazione stile Chigago Style (17a edizione)

Ashley, Roscoe Lewis. Modern European Civilization: A Textbook for Secondary Schools. New York: Macmillan, 1918.

Citatione MLA (9a ed.)

Ashley, Roscoe Lewis. Modern European Civilization: A Textbook for Secondary Schools. Macmillan, 1918.