Dyfyniad APA

Schmidt, S. W., & Shelley, M. C. (1991). American government and politics today. West.

Dyfyniad Arddull Chicago

Schmidt, Steffen W., and Mack C. Shelley. American Government and Politics Today. Saint Paul: West, 1991.

Dyfyniad MLA

Schmidt, Steffen W., and Mack C. Shelley. American Government and Politics Today. West, 1991.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.