Ethier, W. (1988). Modern international economics (2nd ed.). Norton.
Chicago Style aipamenaEthier, Wilfred. Modern International Economics. 2nd ed. New York: Norton, 1988.
MLA aipamenaEthier, Wilfred. Modern International Economics. 2nd ed. Norton, 1988.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.