APA
Appleyard D. R., Field A. J. & Cobb S. L. (2008). International Economics. Boston: McGraw-Hill Irwin.
Chicago
Appleyard Dennis R, Field Alfred J and Cobb Steven L. 2008. International Economics. Boston: McGraw-Hill Irwin.
Harvard
Appleyard D. R., Field A. J. and Cobb S. L. (2008). International Economics. Boston: McGraw-Hill Irwin.
MLA
Appleyard Dennis R, Field Alfred J and Cobb Steven L. International Economics. Boston: McGraw-Hill Irwin. 2008.