APA (7th ed.) Citation

Roskin, M. G., & Berry, N. O. (1999). IR: The new world of international relations (4th ed.). Prentice Hall.

Chicago Style (17th ed.) Citation

Roskin, Michael G., and Nicholas Orlando Berry. IR: The New World of International Relations. 4th ed. Upper Saddle River, N.J: Prentice Hall, 1999.

MLA (9th ed.) Citation

Roskin, Michael G., and Nicholas Orlando Berry. IR: The New World of International Relations. 4th ed. Prentice Hall, 1999.