Cita APA (7a ed.)

Oxley, A. (1990). The challenge of free trade. St. Martin's Press.

Cita Chicago Style (17a ed.)

Oxley, Alan. The Challenge of Free Trade. New York: St. Martin's Press, 1990.

Cita MLA (9a ed.)

Oxley, Alan. The Challenge of Free Trade. St. Martin's Press, 1990.