tiara, mutiara, Havid, H. S., & iroh, rohminatin. (2022). APPLICATION OF CUSTOMER RELATIONSHIP MANAGEMENT (CRM) TO INCREASE SALES AT UD ULONG PIAN. Jurnal Teknik Informatika (Jutif), 3(3), 543-552. https://doi.org/10.20884/1.jutif.2022.3.3.238