Gaya APA

Barnes, J, G. (2003). Secrets of customer relationship management (rahasia manajemen hubungan pelanggan) (Edisi dua). Yogyakarta: Andi Publisher.

Gaya MLA

Barnes, James, G.. "Secrets of customer relationship management (rahasia manajemen hubungan pelanggan)". Edisi dua Yogyakarta: Andi Publisher, 2003. Text.