APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Roskin, Michael, and Nicholas O. Berry. IR: The New World of International Relations. 4. ed. Upper Saddle River, NJ: Prentice Hall, 1999.

MLA (9th ed.) Citation

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