Hill, C. W. (2002). International business[ada CD]. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Hill, Charles W.L. International Business[ada CD]. McGraw-Hill, 2002.
Lua MLA (8ú heag.)Hill, Charles W.L. International Business[ada CD]. McGraw-Hill, 2002.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.