Rugman, A. M., Collinson, S., & Hodgetts, R. M. (2006). International business (4th ed.). Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Rugman, Alan M., Simon Collinson, agus Richard M. Hodgetts. International Business. 4th ed. Harlow, England: Prentice Hall, 2006.
Lua MLA (9ú heag.)Rugman, Alan M., et al. International Business. 4th ed. Prentice Hall, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.