APA (7th ed.) Citation

Koestler, A. (1946). Twilight bar: An escapade in four acts. Macmillan.

Chicago Style (17th ed.) Citation

Koestler, Arthur. Twilight Bar: An Escapade in Four Acts. New York: Macmillan, 1946.

MLA (9th ed.) Citation

Koestler, Arthur. Twilight Bar: An Escapade in Four Acts. Macmillan, 1946.