Παραπομπή APA

Kegley, C. W. (2009). World politics: Trend and transformation (12th ed.). Cengage Learning.

Παραπομπή Chicago Style

Kegley, Charles W. World Politics: Trend and Transformation. 12th ed. Boston, MA: Cengage Learning, 2009.

Παραπομπή MLA

Kegley, Charles W. World Politics: Trend and Transformation. 12th ed. Cengage Learning, 2009.