Roger Drummer Fisher

Harvard Law School professor and director of the Harvard Negotiation Project.

• Getting to yes

  
  Getting to yes 1981
• Difficult Conversations

  
  Difficult Conversations 1999
• Getting to yes

  
  Getting to yes 2011
• Getting to Yes
  Getting to Yes 1991
• Como Chegar Ao Sim
  Como Chegar Ao Sim 2010
• Beyond Reason

  
  Beyond Reason 2005
• Getting to yes
  Getting to yes 1981