Cita APA (7th ed.)

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.