Appleyard, D. R. (1997). International Economics Dennis R. Appleyard, Alfred J. Field. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Appleyard, Dennis R. International Economics Dennis R. Appleyard, Alfred J. Field. McGraw-Hill, 1997.
Lua MLA (8ú heag.)Appleyard, Dennis R. International Economics Dennis R. Appleyard, Alfred J. Field. McGraw-Hill, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.