Gaya APA

McConell, C, R., Brue, S, L. (2002). Ecomics : principles, problems and policies (15). New York: McGraw-Hill.

Gaya MLA

McConell, Campbell, R.., Brue, Stanley, L.. "Ecomics : principles, problems and policies". 15 New York: McGraw-Hill, 2002. Text.