Cita APA (7a ed.)
Pugel, T. A. (2007). International economics (13th ed.). McGraw-Hill/Irwin.
Cita Chicago Style (17a ed.)
Pugel, Thomas A. International Economics. 13th ed. New York: McGraw-Hill/Irwin, 2007.
Cita MLA (9a ed.)
Pugel, Thomas A. International Economics. 13th ed. McGraw-Hill/Irwin, 2007.
Precaución: Estas citas no son 100% exactas.