Citazione Stile APA (7a Edizione)

Clark, C. (1951). The conditions of economic progress (2d ed. completely rewritten.). Macmillan.

Citazione stile Chigago Style (17a edizione)

Clark, Colin. The Conditions of Economic Progress. 2d ed. completely rewritten. London: Macmillan, 1951.

Citatione MLA (9a ed.)

Clark, Colin. The Conditions of Economic Progress. 2d ed. completely rewritten. Macmillan, 1951.