APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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