Cita APA (7th ed.)

Schumpeter, J. A., & Opie, R. (1951). The theory of economic development: An inquiry into profits, capital, credit, interest, and the business cycle. Harvard University Press.

Cita Chicago (17th ed.)

Schumpeter, Joseph Alois, i Redvers Opie. The Theory of Economic Development: An Inquiry into Profits, Capital, Credit, Interest, and the Business Cycle. Cambridge, Mass: Harvard University Press, 1951.

Cita MLA (9th ed.)

Schumpeter, Joseph Alois, i Redvers Opie. The Theory of Economic Development: An Inquiry into Profits, Capital, Credit, Interest, and the Business Cycle. Harvard University Press, 1951.