Gaya APA
Pratama, I, P, A, E. (2019).
Customer Relationship Management (CRM): Teori dan Praktek Berbasis Open Source .
bandung:
informatika.
Gaya MLA
Pratama, I, Putu, Agus, Eka.
"Customer Relationship Management (CRM): Teori dan Praktek Berbasis Open Source".
bandung:
informatika,
2019.
Text.