Daniels, J. D., Sullivan, D. P., & Radebaugh, L. H. (2015). International business: Environments and operations (Fifteenth edition, Global edition.). Pearson Education Limited.
Lua i Stíl Chicago (17ú heag.)Daniels, John D., Daniel P. Sullivan, agus Lee H. Radebaugh. International Business: Environments and Operations. Fifteenth edition, Global edition. Harlow, Essex: Pearson Education Limited, 2015.
Lua MLA (9ú heag.)Daniels, John D., et al. International Business: Environments and Operations. Fifteenth edition, Global edition. Pearson Education Limited, 2015.
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