Goldratt, E. (2006). Necessary but not sufficient.....business novel. Productivity and Quality Pub.
Čikaški stil citiranja (17. izdanje)Goldratt, Eliyahu. Necessary but Not Sufficient.....business Novel. Madras: Productivity and Quality Pub, 2006.
MLA način citiranja (9. izdanje)Goldratt, Eliyahu. Necessary but Not Sufficient.....business Novel. Productivity and Quality Pub, 2006.
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