Cita APA (7a ed.)

Johnson, P. E. (1990). American government: People, institutions, and policies (2. ed.). Houghton Mifflin.

Cita Chicago Style (17a ed.)

Johnson, Paul E. American Government: People, Institutions, and Policies. 2. ed. Boston [u.a.]: Houghton Mifflin, 1990.

Cita MLA (9a ed.)

Johnson, Paul E. American Government: People, Institutions, and Policies. 2. ed. Houghton Mifflin, 1990.