Gaya APA

Levine, E, L., Cornwell, E, E. (1983). An Introduction To American Goverment; Fifth Edition . New York: Macmillan Publishing Company.

Gaya MLA

Levine, Erwin, L.., Cornwell, Elmer, E.. "An Introduction To American Goverment; Fifth Edition". New York: Macmillan Publishing Company, 1983. Text.