ESSINGER JAMES. (1999). SEVEN DEADLY SKILLS OF COMPETING. INTERNATIONAL THOMSON BUSINESS PRESS.
Čikaški stil citiranja (17. izdanje)ESSINGER JAMES. SEVEN DEADLY SKILLS OF COMPETING. LONDON: INTERNATIONAL THOMSON BUSINESS PRESS, 1999.
MLA način citiranja (9. izdanje)ESSINGER JAMES. SEVEN DEADLY SKILLS OF COMPETING. INTERNATIONAL THOMSON BUSINESS PRESS, 1999.
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