Gaya APA

Barnes, J, G., Winardi, A. (2003). Secrets of customer relationship management (Rahasia Manajemen Hubungan Pelanggan) (1). Yogyakarta: Andi.

Gaya MLA

Barnes, James, G.., Winardi, Andreas. "Secrets of customer relationship management (Rahasia Manajemen Hubungan Pelanggan)". 1 Yogyakarta: Andi, 2003. Text.