.Kegley, C. W., & .Raymond, G. A. (2014). The global future: A brief introduction to world politics (5.ed.). Wadsworth Cengage Learning.
Lua i Stíl Chicago (17ú heag.).Kegley, Charles W., agus Gregory A. .Raymond. The Global Future: A Brief Introduction to World Politics. 5.ed. Boston, MA: Wadsworth Cengage Learning, 2014.
Lua MLA (9ú heag.).Kegley, Charles W., agus Gregory A. .Raymond. The Global Future: A Brief Introduction to World Politics. 5.ed. Wadsworth Cengage Learning, 2014.
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