Boller, P. F., & Story, R. (1996). A more perfect Union: Documents in U.S. history (4th ed.). Boston: Houghton Mifflin Co..
Chicago Style CitationBoller, Paul F., i Ronald Story. A More Perfect Union: Documents in U.S. History. 4th ed. Boston: Houghton Mifflin Co., 1996.
Cita MLABoller, Paul F., i Ronald Story. A More Perfect Union: Documents in U.S. History. 4th ed. Boston: Houghton Mifflin Co., 1996.
Atenció: Aquestes cites poden no estar 100% correctes.