Gaya APA
      Barnes, James G. (2003).
    Secrets of Customer Relationship Management : Rahasia Manajemen Hubungan Pelanggan (1).
    Yogyakarta:
  ANDI.
  
Gaya Chicago
      Barnes, James G.
    Secrets of Customer Relationship Management : Rahasia Manajemen Hubungan Pelanggan.
    1
    Yogyakarta:
  ANDI,
  2003.
  .
  
Gaya MLA
      Barnes, James G.
    Secrets of Customer Relationship Management : Rahasia Manajemen Hubungan Pelanggan.
    1
    Yogyakarta:
  ANDI,
  2003.
  .
  
Gaya Turabian
      Barnes, James G.
    Secrets of Customer Relationship Management : Rahasia Manajemen Hubungan Pelanggan.
    1 
    Yogyakarta:
  ANDI,
  2003.
  .