APA (7th ed.) Citation

Kirk, G. L. (1956). The Changing environment of international relations. [publisher not identified].

Chicago Style (17th ed.) Citation

Kirk, Grayson L. The Changing Environment of International Relations. Washington: [publisher not identified], 1956.

MLA (9th ed.) Citation

Kirk, Grayson L. The Changing Environment of International Relations. [publisher not identified], 1956.