Gaya APA

Buttle, F. et al (2007). Customer Relationship Management (Manajemen Hubungan Pelanggan) : Concepts And Tools (Ed.1). Jakarta: Bayu Media.

Gaya MLA

Buttle, Francis. et al. "Customer Relationship Management (Manajemen Hubungan Pelanggan) : Concepts And Tools". Ed.1 Jakarta: Bayu Media, 2007. Text.