APA Style
Barnes, J, G. (2003).
Secrets of Customer Relationship Management : Rahasia Manajemen Hubungan Pelanggan .
Yogyakarta:
Andi.
MLA Style
Barnes, James, G..
"Secrets of Customer Relationship Management : Rahasia Manajemen Hubungan Pelanggan".
Yogyakarta:
Andi,
2003.
.