Gaya APA

BUTTLE, F. (2004). COSTUMER RELATIONSHIP MANAGEMENT (MANAJEMEN HUBUNGAN PELANGGAN) (ED.1). SURABAYA: BAYU MEDIA PUBLISHING.

Gaya MLA

BUTTLE, FRANCIS. "COSTUMER RELATIONSHIP MANAGEMENT (MANAJEMEN HUBUNGAN PELANGGAN)". ED.1 SURABAYA: BAYU MEDIA PUBLISHING, 2004. Text.