Cita APA (7th ed.)
McLelland, C. A. (1966). Theory and the international system. Macmillan.
Cita Chicago (17th ed.)
McLelland, Charles A. Theory and the International System. New York: Macmillan, 1966.
Cita MLA (9th ed.)
McLelland, Charles A. Theory and the International System. Macmillan, 1966.
Atenció: Aquestes cites poden no estar 100% correctes.