Cita APA

Boller, P. F., & Story, R. (1996). A more perfect Union: Documents in U.S. history (4th ed.). Boston: Houghton Mifflin Co..

Citación estilo Chicago

Boller, Paul F., y Ronald Story. A More Perfect Union: Documents in U.S. History. 4th ed. Boston: Houghton Mifflin Co., 1996.

Cita MLA

Boller, Paul F., y Ronald Story. A More Perfect Union: Documents in U.S. History. 4th ed. Boston: Houghton Mifflin Co., 1996.