APA (7th ed.) Citation

Kohn, H. (1949). The twentieth century: A mid-way account of the Western World. Macmillan Co..

Chicago Style (17th ed.) Citation

Kohn, Hans. The Twentieth Century: A Mid-way Account of the Western World. New York: Macmillan Co., 1949.

MLA (9th ed.) Citation

Kohn, Hans. The Twentieth Century: A Mid-way Account of the Western World. Macmillan Co., 1949.