Kirk, G. (1956). The changing environment of international relations. Washington, D.C: The Brookings Institution.
Чикагска система за цитиранеKirk, Grayson. The Changing Environment of International Relations. Washington, D.C: The Brookings Institution, 1956.
MLA формат за цитиранеKirk, Grayson. The Changing Environment of International Relations. Washington, D.C: The Brookings Institution, 1956.
Внимание: Тези цитати може да не са 100% точни.