Bergstrom, T. C., & Varian, H. R. (1993). Workouts in intermediate microeconomics (3rd ed.). W.W. Norton.
Cita Chicago (17th ed.)Bergstrom, Theodore C., i Hal R. Varian. Workouts in Intermediate Microeconomics. 3rd ed. New York: W.W. Norton, 1993.
Cita MLA (9th ed.)Bergstrom, Theodore C., i Hal R. Varian. Workouts in Intermediate Microeconomics. 3rd ed. W.W. Norton, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.