APA (7th ed.) Citation

Langer, W. L., & Gleason, S. E. (1964). The challenge to isolation: The world crisis of 1937-1940 and American foreign policy. Harper and Row.

Chicago Style (17th ed.) Citation

Langer, William Leonard, and Sarell Everest Gleason. The Challenge to Isolation: The World Crisis of 1937-1940 and American Foreign Policy. New York: Harper and Row, 1964.

MLA (9th ed.) Citation

Langer, William Leonard, and Sarell Everest Gleason. The Challenge to Isolation: The World Crisis of 1937-1940 and American Foreign Policy. Harper and Row, 1964.