Gaya APA

McConnell, C, R., Brue, S, R. (2002). Economics: Principles, problems and Policies (15 th ed.). New York: Mc Graw Hill Companies Inc..

Gaya MLA

McConnell, Cambell, R.., Brue, Stanley, R.. "Economics: Principles, problems and Policies". 15 th ed. New York: Mc Graw Hill Companies Inc., 2002. Text.