Dyfyniad APA

ESSINGER JAMES. (1999). SEVEN DEADLY SKILLS OF COMPETING. INTERNATIONAL THOMSON BUSINESS PRESS.

Dyfyniad Arddull Chicago

ESSINGER JAMES. SEVEN DEADLY SKILLS OF COMPETING. LONDON: INTERNATIONAL THOMSON BUSINESS PRESS, 1999.

Dyfyniad MLA

ESSINGER JAMES. SEVEN DEADLY SKILLS OF COMPETING. INTERNATIONAL THOMSON BUSINESS PRESS, 1999.

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