Gaya APA

MBA, D, A, W, T, A. (2008). dasar-dasar customer relationship management (CRM) (1). Jakarta: HARVARINDO.

Gaya MLA

MBA, Drs., Amin, Widjaja, Tunggal,, Ak.. "dasar-dasar customer relationship management (CRM)". 1 Jakarta: HARVARINDO, 2008. Text.