Appleyard, D. R., & Field, A. J. (1995). International economics (2nd ed.). Irwin.
Lua i Stíl Chicago (17ú heag.)Appleyard, Dennis R., agus Alfred J. Field. International Economics. 2nd ed. Chicago: Irwin, 1995.
Lua MLA (9ú heag.)Appleyard, Dennis R., agus Alfred J. Field. International Economics. 2nd ed. Irwin, 1995.