APA

Clancy T., . (1989). Clear and present danger. New York: Putnam.

Chicago

Clancy Tom, . 1989. Clear and present danger. New York: Putnam.

Harvard

Clancy T., . (1989). Clear and present danger. New York: Putnam.

MLA

Clancy Tom, . Clear and present danger. New York: Putnam. 1989.