Cita APA

Roskin, M. G., Roskin, M., & Berry, N. O. (1993). IR, the new world of international relations (2nd ed.). Prentice-Hall.

Citación estilo Chicago

Roskin, Michael G., Michael Roskin, and Nicholas O. Berry. IR, the New World of International Relations. 2nd ed. Englewood Cliffs, N.J: Prentice-Hall, 1993.

Cita MLA

Roskin, Michael G., et al. IR, the New World of International Relations. 2nd ed. Prentice-Hall, 1993.