Gaya APA

Barnes, J, G. et al (). Secret of Customer Relationship Management: Rahasia Manajemen Hubungan Pelanggan . Yogyakarta: Andi.

Gaya MLA

Barnes, James, G.. et al. "Secret of Customer Relationship Management: Rahasia Manajemen Hubungan Pelanggan". Yogyakarta: Andi, . Text.