APA (7th ed.) Citation

Hubbard, R. G., & O'Brien, A. P. (2009). Essentials of economics (Second edition.). Prentice Hall.

Chicago Style (17th ed.) Citation

Hubbard, R. Glenn, and Anthony Patrick O'Brien. Essentials of Economics. Second edition. Upper Saddle River, N.J: Prentice Hall, 2009.

MLA (8th ed.) Citation

Hubbard, R. Glenn, and Anthony Patrick O'Brien. Essentials of Economics. Second edition. Prentice Hall, 2009.