APA Style
Buttle, F. (2004).
Customer Relationship Management (Manajemen Hubungan Pelanggan): Concepts And Tools .
Malang:
Bayumedia.
MLA Style
Buttle, Francis.
"Customer Relationship Management (Manajemen Hubungan Pelanggan): Concepts And Tools".
Malang:
Bayumedia,
2004.
Manajemen.