Cita APA (7th ed.)
Coplin, W. D. (1980). Introduction to international politics (3d ed.). Prentice-Hall.
Cita Chicago (17th ed.)
Coplin, William D. Introduction to International Politics. 3d ed. Englewood Cliffs, N.J.: Prentice-Hall, 1980.
Cita MLA (9th ed.)
Coplin, William D. Introduction to International Politics. 3d ed. Prentice-Hall, 1980.
Atenció: Aquestes cites poden no estar 100% correctes.