.Ethier, W. j. (1995). Modern international economics (3rd ed.). W.W. Norton.
Cita Chicago (17th ed.).Ethier, Wilfred j. Modern International Economics. 3rd ed. New York: W.W. Norton, 1995.
Cita MLA (9th ed.).Ethier, Wilfred j. Modern International Economics. 3rd ed. W.W. Norton, 1995.
Atenció: Aquestes cites poden no estar 100% correctes.