Putri Siregar, Nur Madani, et al. “IMPLEMENTATION OF CUSTOMER RELATIONSHIP MANAGEMENT FOR SALES OF USED SHOES AT MZM SECOND BRANDED TANJUNGBALAI”. Jurnal Ipteks Terapan, vol. 17, no. 2, June 2023, pp. 244-51, doi:10.22216/jit.v17i2.1599.