APA (7th ed.) Citation

Kohn, H. (1950). The twentieth century: A mid-way account of the western world. Gollancz.

Chicago Style (17th ed.) Citation

Kohn, Hans. The Twentieth Century: A Mid-way Account of the Western World. London: Gollancz, 1950.

MLA (9th ed.) Citation

Kohn, Hans. The Twentieth Century: A Mid-way Account of the Western World. Gollancz, 1950.