Daniels, J. D., Radebaugh, L. H., & Sullivan, D. P. (2009). International business: Environments and operations (12th.). Pearson Education International.
Lua i Stíl Chicago (17ú heag.)Daniels, John D., Lee H. Radebaugh, agus Daniel P. Sullivan. International Business: Environments and Operations. 12th. Upper Saddle River: Pearson Education International, 2009.
Lua MLA (9ú heag.)Daniels, John D., et al. International Business: Environments and Operations. 12th. Pearson Education International, 2009.
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