Gaya APA
Buttle, F., Subiyanto, A. (2004).
Customer Relationship Management (Manajemen Hubungan Pelanggan) (1).
Jakarta:
BayuMedia Publishing.
Gaya MLA
Buttle, Francis., Subiyanto, Arief.
"Customer Relationship Management (Manajemen Hubungan Pelanggan)".
1
Jakarta:
BayuMedia Publishing,
2004.
Teks Manajemen.