Cita APA (7a ed.)

Dougherty, J. E., & Pfaltzgraff, R. L. (1981). Contending theories of international relations: A comprehensive survey (2nd ed.). Harper & Row.

Cita Chicago Style (17a ed.)

Dougherty, James Edward, y Robert Louis Pfaltzgraff. Contending Theories of International Relations: A Comprehensive Survey. 2nd ed. New York [etc.]: Harper & Row, 1981.

Cita MLA (9a ed.)

Dougherty, James Edward, y Robert Louis Pfaltzgraff. Contending Theories of International Relations: A Comprehensive Survey. 2nd ed. Harper & Row, 1981.