Gaya APA

Baumol, W, J., Blinder, A, S. (1974). Economics : principles and policy (4th ed.). Orlando, FL: Harcout Brace Jovanovich, c.

Gaya MLA

Baumol, William, J.., Blinder, Alan, S.. "Economics : principles and policy". 4th ed. Orlando, FL: Harcout Brace Jovanovich, c, 1974. Text.