Gaya APA

Halter, G, M., Patterson, T, E. (2006). The American democracy (Texas edition: 8th ed.) (8th ed.). New York: McGraw-Hill.

Gaya MLA

Halter, Gary, M.., Patterson, Thomas, E.. "The American democracy (Texas edition: 8th ed.)". 8th ed. New York: McGraw-Hill, 2006. Text.