APA Style
      BUTTLE,Francis. (2007).
    Customer Relationship Management(Manajemen hubungan pelanggan):concepts and tools. STIE .
    Malang:
  bayumedia.
  
Chicago Style
      BUTTLE,Francis.
    Customer Relationship Management(Manajemen hubungan pelanggan):concepts and tools. STIE.
    
    Malang:
  bayumedia,
  2007.
  Text.
  
MLA Style
      BUTTLE,Francis.
    Customer Relationship Management(Manajemen hubungan pelanggan):concepts and tools. STIE.
    
    Malang:
  bayumedia,
  2007.
  Text.
  
Turabian Style
      BUTTLE,Francis.
    Customer Relationship Management(Manajemen hubungan pelanggan):concepts and tools. STIE.
     
    Malang:
  bayumedia,
  2007.
  Print.