Gaya APA

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

Gaya MLA

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