Cita APA (7th ed.)
Appleyard, D. R., & Field, A. J. (2017). International economics (9th ed.). McGraw Hill.
Cita Chicago (17th ed.)
Appleyard, Dennis R., i Alfred J. Field. International Economics. 9th ed. New York: McGraw Hill, 2017.
Cita MLA (9th ed.)
Appleyard, Dennis R., i Alfred J. Field. International Economics. 9th ed. McGraw Hill, 2017.
Atenció: Aquestes cites poden no estar 100% correctes.