APA (7th ed.) Citation

Keller, J. W. (1964). Germany, the wall and Berlin: Internal politics during an international crisis. Vantage Press.

Chicago Style (17th ed.) Citation

Keller, John Wendell. Germany, the Wall and Berlin: Internal Politics During an International Crisis. New York: Vantage Press, 1964.

MLA (9th ed.) Citation

Keller, John Wendell. Germany, the Wall and Berlin: Internal Politics During an International Crisis. Vantage Press, 1964.