Cita APA (7a ed.)

Kegley, C. W., & Wittkopf, E. R. (1999). World politics: Trends and transformation (7th. ed.). St. Martin's : Worth.

Cita Chicago Style (17a ed.)

Kegley, Charles W., y Eugene R. Wittkopf. World Politics: Trends and Transformation. 7th. ed. New York: St. Martin's : Worth, 1999.

Cita MLA (9a ed.)

Kegley, Charles W., y Eugene R. Wittkopf. World Politics: Trends and Transformation. 7th. ed. St. Martin's : Worth, 1999.