Gaya APA

BUTTLE, F., SUBIYANTO, A. (2007). MANAJEMEN HUBUNGAN PELANGGAN (Customer Relationship Management); Concepts and Tools . Jakarta: BAYUMEDIA PUBLISHING.

Gaya MLA

BUTTLE, Francis., SUBIYANTO, Arif. "MANAJEMEN HUBUNGAN PELANGGAN (Customer Relationship Management); Concepts and Tools". Jakarta: BAYUMEDIA PUBLISHING, 2007. Text.