Cita APA (7th ed.)

De Grazia, A. (1962). The elements of political science (2a. ed.). Free.

Cita Chicago (17th ed.)

De Grazia, Alfred. The Elements of Political Science. 2a. ed. Nueva York: Free, 1962.

Cita MLA (9th ed.)

De Grazia, Alfred. The Elements of Political Science. 2a. ed. Free, 1962.