Cita APA (7th ed.)
McConnell R. Campbell & Brue, S. L. (2005). Economics: Principles, problems, and policies (16th ed.). Mc Graw- Hill.
Cita Chicago (17th ed.)
McConnell R. Campbell i Stanley L. Brue. Economics: Principles, Problems, and Policies. 16th ed. Newyork: Mc Graw- Hill, 2005.
Cita MLA (9th ed.)
McConnell R. Campbell i Stanley L. Brue. Economics: Principles, Problems, and Policies. 16th ed. Mc Graw- Hill, 2005.
Atenció: Aquestes cites poden no estar 100% correctes.