Cita APA (7a ed.)

Libby, R. T. (1992). Protecting markets: U.S. policy and the world grain trade. Cornell University Press.

Cita Chicago Style (17a ed.)

Libby, Ronald T. Protecting Markets: U.S. Policy and the World Grain Trade. New York: Cornell University Press, 1992.

Cita MLA (8a ed.)

Libby, Ronald T. Protecting Markets: U.S. Policy and the World Grain Trade. Cornell University Press, 1992.