Cita APA (7th ed.)

Heineman, R. A., Peterson, S. A., & Rasmussen, T. H. (1989). American government. McGraw-Hill.

Cita Chicago (17th ed.)

Heineman, Robert A., Steven A. Peterson, i Thomas H. Rasmussen. American Government. New York: McGraw-Hill, 1989.

Cita MLA (9th ed.)

Heineman, Robert A., et al. American Government. McGraw-Hill, 1989.