Cita APA (7th ed.)
Lerche, C. O. (1956). Principles of international politics. Oxford University Press.
Cita Chicago (17th ed.)
Lerche, Charles O. Principles of International Politics. New York: Oxford University Press, 1956.
Cita MLA (9th ed.)
Lerche, Charles O. Principles of International Politics. Oxford University Press, 1956.
Atenció: Aquestes cites poden no estar 100% correctes.