The 21 Indispendable Qualities of a Leader

Geahča maid

• Think Like Einstein & Learn Like Einstein
  Dahkki: Hollins, Peter
  Almmustuhtton: (2018)
• Six Thinking Hats
  Dahkki: Bono, Edward de
  Almmustuhtton: (1999)
• The Five-Day Course in Thinking
  Dahkki: De Bono, Edward
  Almmustuhtton: (2016)
• Six Thinking Hats
  Dahkki: Bono, Edward De
  Almmustuhtton: (2000)
• Six Frames
  Dahkki: Bono, Edward De
  Almmustuhtton: (2008)