APA (7th ed.) Citation

Koestler, A. (1954). Arrow in the blue / by A. Koestler. Collins and Hamilton.

Chicago Style (17th ed.) Citation

Koestler, Arthur. Arrow in the Blue / by A. Koestler. Collins and Hamilton, 1954.

MLA (9th ed.) Citation

Koestler, Arthur. Arrow in the Blue / by A. Koestler. Collins and Hamilton, 1954.

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