Roskin, M. G., & Berry, N. O. (1999). IR: The new world of international relations (Fourth edition.). Prentice-Hall.
Cita Chicago (17th ed.)Roskin, Michael G., i Nicholas O. Berry. IR: The New World of International Relations. Fourth edition. Upper Saddle River, New Jersey: Prentice-Hall, 1999.
Cita MLA (9th ed.)Roskin, Michael G., i Nicholas O. Berry. IR: The New World of International Relations. Fourth edition. Prentice-Hall, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.