APA (7th ed.) Citation

Heppen, J., & Otterstrom, S. (2009). Geography, history, and the American political economy. Lexington Books.

Chicago Style (17th ed.) Citation

Heppen, John, and Samuel Otterstrom. Geography, History, and the American Political Economy. Lanham, Md.: Lexington Books, 2009.

MLA (9th ed.) Citation

Heppen, John, and Samuel Otterstrom. Geography, History, and the American Political Economy. Lexington Books, 2009.