APA Style

Pratama, I, P, A, E. (2019). Customer Relationship Management(CRM): Teori Dan Praktek Berbasis Open Source . Bandung: Penerbit Informatika.

MLA Style

Pratama, I, Putu, Agus, Eka. "Customer Relationship Management(CRM): Teori Dan Praktek Berbasis Open Source". Bandung: Penerbit Informatika, 2019. Text.