Cita APA (7th ed.)

.Appleyard, D. R., .Field, A. J., & .Cobb, S. L. (2008). International economics (6th ed.). McGraw-Hill Irwin.

Cita Chicago (17th ed.)

.Appleyard, Dennis R., Alfred J. .Field, i Steven L. .Cobb. International Economics. 6th ed. Boston: McGraw-Hill Irwin, 2008.

Cita MLA (9th ed.)

.Appleyard, Dennis R., et al. International Economics. 6th ed. McGraw-Hill Irwin, 2008.