Baumol, W. J., & Blinder, A. S. (1991). Economics: Principles and policy (5th ed.). Harcourt Brace.
Cita Chicago (17th ed.)Baumol, William J., i Alan S. Blinder. Economics: Principles and Policy. 5th ed. San Diego: Harcourt Brace, 1991.
Cita MLA (9th ed.)Baumol, William J., i Alan S. Blinder. Economics: Principles and Policy. 5th ed. Harcourt Brace, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.