Nickels, W. G., McHugh, J. M., & McHugh, S. M. (1993). Understanding business (3rd edition.). Irwin.
Chicago Style (17. basım) AtıfNickels, William G., James M. McHugh, ve Susan M. McHugh. Understanding Business. 3rd edition. Homewood, IL: Irwin, 1993.
MLA (8th ed.) AtıfNickels, William G., et al. Understanding Business. 3rd edition. Irwin, 1993.
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