Ginsberg, B., Lowi, T. J., Weir, M., Tolbert, C. J., Campbell, A. L., & Spitzer, R. J. (2019). We the people: An introduction to American politics (12th essentials edition.). New York: W.W. Norton & Company.

Ginsberg, Benjamin,, Theodore J. Lowi, Margaret Weir, Caroline J. Tolbert, Andrea Louise Campbell, and Robert J. Spitzer. We the People: An Introduction to American Politics. 12th essentials edition. New York: W.W. Norton & Company, 2019.

Ginsberg, Benjamin,, et al. We the People: An Introduction to American Politics. 12th essentials edition. New York: W.W. Norton & Company, 2019.