APA (7th ed.) Citation

Birch, W. R., & Cooperman, E. T. (2009). The country seats of the United States. University of Pennsylvania Press.

Chicago Style (17th ed.) Citation

Birch, William Russell, and Emily T. Cooperman. The Country Seats of the United States. Philadelphia: University of Pennsylvania Press, 2009.

MLA (9th ed.) Citation

Birch, William Russell, and Emily T. Cooperman. The Country Seats of the United States. University of Pennsylvania Press, 2009.