Gaya APA

Tunggal, Amin Widjaja. (2008). Dasar-dasar customer relationship management (CRM) . : Harvarindo .

Gaya Chicago

Tunggal, Amin Widjaja. Dasar-dasar customer relationship management (CRM). : Harvarindo , 2008. Media Cetak.

Gaya MLA

Tunggal, Amin Widjaja. Dasar-dasar customer relationship management (CRM). : Harvarindo , 2008. Media Cetak.

Gaya Turabian

Tunggal, Amin Widjaja. Dasar-dasar customer relationship management (CRM). : Harvarindo , 2008. Media Cetak.