APA

Kahn H., . (1962). Thinking about the unthinkable. New York: Horizon Press.

Chicago

Kahn Herman, . 1962. Thinking about the unthinkable. New York: Horizon Press.

Harvard

Kahn H., . (1962). Thinking about the unthinkable. New York: Horizon Press.

MLA

Kahn Herman, . Thinking about the unthinkable. New York: Horizon Press. 1962.