Cita APA (7th ed.)
McConnell, C. R., & Brue, S. L. (1996). Economics: Principles, problems, and policies (13th ed.). McGraw-Hill.
Cita Chicago (17th ed.)
McConnell, Campbell R., i Stanley L. Brue. Economics: Principles, Problems, and Policies. 13th ed. New York: McGraw-Hill, 1996.
Cita MLA (9th ed.)
McConnell, Campbell R., i Stanley L. Brue. Economics: Principles, Problems, and Policies. 13th ed. McGraw-Hill, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.