Lopez, G. A. (1989). International relations: Contemporary theory and practice. CQ.
Cita Chicago (17th ed.)Lopez, George A. International Relations: Contemporary Theory and Practice. Washington, D.C.: CQ, 1989.
Cita MLA (9th ed.)Lopez, George A. International Relations: Contemporary Theory and Practice. CQ, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.