APA (7th ed.) Citation

Conference on Condition of World Order, Bellagio, Italy, 1965, & Hoffmann, S. (1965). Conditions of world order. Simon and Schuster.

Chicago Style (17th ed.) Citation

Conference on Condition of World Order, Bellagio, Italy, 1965, and Stanley Hoffmann. Conditions of World Order. New York: Simon and Schuster, 1965.

MLA (9th ed.) Citation

Conference on Condition of World Order, Bellagio, Italy, 1965, and Stanley Hoffmann. Conditions of World Order. Simon and Schuster, 1965.