APA

Keegan J., . (1978). Who was who in World War II. New York: T. Y. Crowell.

Chicago

Keegan John, . 1978. Who was who in World War II. New York: T. Y. Crowell.

Harvard

Keegan J., . (1978). Who was who in World War II. New York: T. Y. Crowell.

MLA

Keegan John, . Who was who in World War II. New York: T. Y. Crowell. 1978.