Hicks, H. G., & Gullett, C. R. (1974). Modern business management: Systems and environmental approach. McGraw-Hill.
Čikaški stil citiranja (17. izdanje)Hicks, Herbert G., i C. Ray Gullett. Modern Business Management: Systems and Environmental Approach. New York: McGraw-Hill, 1974.
MLA način citiranja (9. izdanje)Hicks, Herbert G., i C. Ray Gullett. Modern Business Management: Systems and Environmental Approach. McGraw-Hill, 1974.
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