APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

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