APA (7th ed.) Citation

Butterfield, H., & Wight, M. (1969). Diplomatic investigations: Essays in the theory of international politics. George Allen & Unwin.

Chicago Style (17th ed.) Citation

Butterfield, Herbert, and Martin Wight. Diplomatic Investigations: Essays in the Theory of International Politics. London: George Allen & Unwin, 1969.

MLA (9th ed.) Citation

Butterfield, Herbert, and Martin Wight. Diplomatic Investigations: Essays in the Theory of International Politics. George Allen & Unwin, 1969.