APA (7th ed.) Citation

O'Sullivan & Sheffrin. (2003). Economics principles and tools (3rd ed.). Pearson Education International.

Chicago Style (17th ed.) Citation

O'Sullivan and Sheffrin. Economics Principles and Tools. 3rd ed. New Jersey: Pearson Education International, 2003.

MLA (8th ed.) Citation

O'Sullivan and Sheffrin. Economics Principles and Tools. 3rd ed. Pearson Education International, 2003.