Ritchie, D. A. (2006). The Congress of the United States: A student companion (Third edition.). Oxford University Press.
Style de citation Chicago (17e éd.)Ritchie, Donald A. The Congress of the United States: A Student Companion. Third edition. New York: Oxford University Press, 2006.
Style de citation MLA (8e éd.)Ritchie, Donald A. The Congress of the United States: A Student Companion. Third edition. Oxford University Press, 2006.
Attention : ces citations peuvent ne pas être correctes à 100%.