APA (7th ed.) Citation

Roskin, M. G., & Berry, N. O. (1999). IR: The new world of international relations (Fourth edition.). Prentice-Hall.

Chicago Style (17th ed.) Citation

Roskin, Michael G., and Nicholas O. Berry. IR: The New World of International Relations. Fourth edition. Upper Saddle River, New Jersey: Prentice-Hall, 1999.

MLA (9th ed.) Citation

Roskin, Michael G., and Nicholas O. Berry. IR: The New World of International Relations. Fourth edition. Prentice-Hall, 1999.