APA (7th ed.) Citation

Koestler, A. (1968). Scum of the earth. Hutchinson.

Chicago Style (17th ed.) Citation

Koestler, Arthur. Scum of the Earth. London: Hutchinson, 1968.

MLA (9th ed.) Citation

Koestler, Arthur. Scum of the Earth. Hutchinson, 1968.

Warning: These citations may not always be 100% accurate.