Cita APA (7a ed.)

McLelland, C. A. (1966). Theory and the international system. Macmillan.

Cita Chicago Style (17a ed.)

McLelland, Charles A. Theory and the International System. New York: Macmillan, 1966.

Cita MLA (9a ed.)

McLelland, Charles A. Theory and the International System. Macmillan, 1966.