SETHI SUBHASH C. (2003). TWENTY FIVE MINUTES TO ENHANCE YOUR ATTITUDE MANAGEMENT. INDIANA BOOKS.
Chicago-referens (17:e uppl.)SETHI SUBHASH C. TWENTY FIVE MINUTES TO ENHANCE YOUR ATTITUDE MANAGEMENT. NEW DELHI: INDIANA BOOKS, 2003.
MLA-referens (9:e uppl.)SETHI SUBHASH C. TWENTY FIVE MINUTES TO ENHANCE YOUR ATTITUDE MANAGEMENT. INDIANA BOOKS, 2003.
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