APA (7th ed.) Citation

Patrick, J. J., Pious, R. M., & Ritchie, D. A. (2001). The Oxford guide to the United States government. Oxford University Press.

Chicago Style (17th ed.) Citation

Patrick, John J., Richard M. Pious, and Donald A. Ritchie. The Oxford Guide to the United States Government. Oxford ; New York: Oxford University Press, 2001.

MLA (9th ed.) Citation

Patrick, John J., et al. The Oxford Guide to the United States Government. Oxford University Press, 2001.