Cita APA (7th ed.)

Harrigan, J. J. (1992). Politics and the American future (3rd ed.). McGraw-Hill.

Cita Chicago (17th ed.)

Harrigan, John J. Politics and the American Future. 3rd ed. New York: McGraw-Hill, 1992.

Cita MLA (9th ed.)

Harrigan, John J. Politics and the American Future. 3rd ed. McGraw-Hill, 1992.