Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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