Citazione Stile APA (7a Edizione)

Clark, C. (1957). The conditions of economic progress (3rd ed.). Macmillan.

Citazione stile Chigago Style (17a edizione)

Clark, Colin. The Conditions of Economic Progress. 3rd ed. London: Macmillan, 1957.

Citatione MLA (9a ed.)

Clark, Colin. The Conditions of Economic Progress. 3rd ed. Macmillan, 1957.