Παραπομπή APA

Schumpeter, J. A. (1939). Business cycles. Mcgraw hill book company.

Παραπομπή Chicago Style

Schumpeter, Joseph A. Business Cycles. London: Mcgraw hill book company, 1939.

Παραπομπή MLA

Schumpeter, Joseph A. Business Cycles. Mcgraw hill book company, 1939.