Principle-centered leadership /

Antzeko izenburuak

• Principle-centered leadership /
  nork: Covey, Stephen R.
  Argitaratua: (1991)
• The 7 habits of highly effective people /
  nork: Covey Stephen R.
  Argitaratua: (2004)
• The 7 habits of highly effective people /
  nork: Covey Stephen R.
  Argitaratua: (2004)
• The success principles : how to get from where you are to where you want to be /
  nork: Canfield, Jack
  Argitaratua: (2005)
• The success principles : how to get from where you are to where you want to be /
  nork: Canfield, Jack
  Argitaratua: (2005)