APA

Koestler A., . (1961). Arrow in the blue: an autobiography. New York: Macmillan Co.

Chicago

Koestler Arthur, . 1961. Arrow in the blue: an autobiography. New York: Macmillan Co.

Harvard

Koestler A., . (1961). Arrow in the blue: an autobiography. New York: Macmillan Co.

MLA

Koestler Arthur, . Arrow in the blue: an autobiography. New York: Macmillan Co. 1961.