.Kegley, C. W., & .Raymond, G. A. (2014). The global future: A brief introduction to world politics (5.ed.). Wadsworth Cengage Learning.

.Kegley, Charles W., and Gregory A. .Raymond. The Global Future: A Brief Introduction to World Politics. 5.ed. Boston, MA: Wadsworth Cengage Learning, 2014.

.Kegley, Charles W., and Gregory A. .Raymond. The Global Future: A Brief Introduction to World Politics. 5.ed. Wadsworth Cengage Learning, 2014.