Principle-centered leadership /

Míreanna comhchosúla

• The power of positive doing /
  de réir: Burnell, Ivan
• Spell success in your life : a road map for achieving your goals and surviving success /
  de réir: Colwell, Peter G.
  Foilsithe / Cruthaithe: (2002)
• The 7 habits of highly effective teens : the ultimate teenage success guide /
  de réir: Covey, Sean
  Foilsithe / Cruthaithe: (1998)
• The 7 habits of highly effective people : restoring the character ethic /
  de réir: Covey, Stephen R.
• The seven habits of highly effective people : restoring the character ethic /
  de réir: Covey, Stephen R.
  Foilsithe / Cruthaithe: (1989)