Viotti, P. R., & Kauppi, M. V. (2014). International relations theory (5th ed.). Pearson.

Viotti, Paul R., and Mark V. Kauppi. International Relations Theory. 5th ed. Boston: Pearson, 2014.

Viotti, Paul R., and Mark V. Kauppi. International Relations Theory. 5th ed. Pearson, 2014.