Cita APA (7th ed.)
Clancy, T. (1991). The sum of all fears. Putnam.
Cita Chicago (17th ed.)
Clancy, Tom. The Sum of All Fears. New York: Putnam, 1991.
Cita MLA (9th ed.)
Clancy, Tom. The Sum of All Fears. Putnam, 1991.
Atenció: Aquestes cites poden no estar 100% correctes.