Cita APA (7th ed.)
Winters, L. A., & Wells, S. J. (1998). International economics (4th ed.). Routledge.
Cita Chicago (17th ed.)
Winters, L. Alan, i Sidney J. Wells. International Economics. 4th ed. London: Routledge, 1998.
Cita MLA (9th ed.)
Winters, L. Alan, i Sidney J. Wells. International Economics. 4th ed. Routledge, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.