Cita APA (7a ed.)

Lees, J. D. (1983). The political system of the United States (3rd ed.). Faber and Faber.

Cita Chicago Style (17a ed.)

Lees, John David. The Political System of the United States. 3rd ed. London: Faber and Faber, 1983.

Cita MLA (9a ed.)

Lees, John David. The Political System of the United States. 3rd ed. Faber and Faber, 1983.