Cita APA (7th ed.)
Appleyard, D. R., & Field, A. J. (2001). International economics (4th ed.). McGraw-Hill/Irwin.
Cita Chicago (17th ed.)
Appleyard, Dennis R., i Alfred J. Field. International Economics. 4th ed. Boston, Mass.: McGraw-Hill/Irwin, 2001.
Cita MLA (9th ed.)
Appleyard, Dennis R., i Alfred J. Field. International Economics. 4th ed. McGraw-Hill/Irwin, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.