MASYTHA SIAGIAN, N.; DWI SENA, M.; MADONNA YUMA, F. E-CRM MYSAFFANA FOR OPTIMIZING CUSTOMER AND TRANSACTION DATA AT SAFFANA BOUTIQUE . JURTEKSI (jurnal Teknologi dan Sistem Informasi), v. 12, n. 2, p. 231-238, 6 Mar. 2026.