APA Style

Barnes, J, G., Asparyogi, A. (2003). Secrets of customer relationship management = Rahasia manajemen hubungan pelanggan . Yogyakarta: Andi.

MLA Style

Barnes, James, G.., Asparyogi, Andre. "Secrets of customer relationship management = Rahasia manajemen hubungan pelanggan". Yogyakarta: Andi, 2003. Books.