Hill, C. W. L. (2007). International business: Competing in the global marketplace (6th ed.). McGraw-Hill/Irwin.
Lua i Stíl Chicago (17ú heag.)Hill, Charles W. L. International Business: Competing in the Global Marketplace. 6th ed. Boston: McGraw-Hill/Irwin, 2007.
Lua MLA (8ú heag.)Hill, Charles W. L. International Business: Competing in the Global Marketplace. 6th ed. McGraw-Hill/Irwin, 2007.
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