Gaya APA

Pratama, I, P, A, E. (2019). Customer relationship management (CRM) (Cet. 1). Bandung: Informatika.

Gaya MLA

Pratama, I, Putu, Agus, Eka. "Customer relationship management (CRM)". Cet. 1 Bandung: Informatika, 2019. TEXT.