Roskin, M. G., & By Berry , . N. . O. (2002). The New world of international relations (5th ed.). Prentice-Hall.
Cita Chicago (17th ed.)Roskin, Michael G., i Nicholas O. By Berry. The New World of International Relations. 5th ed. New Delhi: Prentice-Hall, 2002.
Cita MLA (9th ed.)Roskin, Michael G., i Nicholas O. By Berry. The New World of International Relations. 5th ed. Prentice-Hall, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.