Czinkota, M. R., Rivoli, P., & Ronkainen, l. A. (1989). International business. The Dryden Press.
Lua i Stíl Chicago (17ú heag.)Czinkota, Michael R., Pietra Rivoli, agus lkka A. Ronkainen. International Business. Chicago: The Dryden Press, 1989.
Lua MLA (9ú heag.)Czinkota, Michael R., et al. International Business. The Dryden Press, 1989.
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