APA

Koestler A., . (1952). Arrow in the blue. New York]: Macmillan.

Chicago

Koestler Arthur, . 1952. Arrow in the blue. New York]: Macmillan.

Harvard

Koestler A., . (1952). Arrow in the blue. New York]: Macmillan.

MLA

Koestler Arthur, . Arrow in the blue. New York]: Macmillan. 1952.