APA Style

Case, Karl E., Fair, Ray C., Oster, Sharon M.. (2009). Principles of Economics (Ed. 9th). New Jersey: Prentice Hall.

Chicago Style

Case, Karl E., Fair, Ray C., Oster, Sharon M.. Principles of Economics. Ed. 9th New Jersey: Prentice Hall, 2009. Text.

MLA Style

Case, Karl E., Fair, Ray C., Oster, Sharon M.. Principles of Economics. Ed. 9th New Jersey: Prentice Hall, 2009. Text.

Turabian Style

Case, Karl E., Fair, Ray C., Oster, Sharon M.. Principles of Economics. Ed. 9th New Jersey: Prentice Hall, 2009. Print.