APA (7e ed.) Bronvermelding

O'Sullivan, A., & Sheffrin, S. M. (2003). Economics: Principles in action (Classroom ed.). Pearson Prentice Hall.

Chicago (17e ed.) Bronvermelding

O'Sullivan, Arthur, en Steven M. Sheffrin. Economics: Principles in Action. Classroom ed. Boston: Pearson Prentice Hall, 2003.

MLA (9e ed.) Bronvermelding

O'Sullivan, Arthur, en Steven M. Sheffrin. Economics: Principles in Action. Classroom ed. Pearson Prentice Hall, 2003.