APA

Cohen D., Cohen S., . (1986). Heroes of the Challenger. New York: Pocket Books.

Chicago

Cohen Daniel, Cohen Susan, . 1986. Heroes of the Challenger. New York: Pocket Books.

Harvard

Cohen D., Cohen S., . (1986). Heroes of the Challenger. New York: Pocket Books.

MLA

Cohen Daniel, Cohen Susan, . Heroes of the Challenger. New York: Pocket Books. 1986.