PENERAPAN CUSTOMER RELATIONSHIP MANAGEMENT ALAT KANTOR PADA UD. HANAN. JOURNAL OF SCIENCE AND SOCIAL RESEARCH, [S. l.], v. 9, n. 5, p. 7728 – 7733, 2026. DOI: 10.54314/jssr.v9i5.7228. Disponível em: https://jurnal.goretanpena.com/index.php/JSSR/article/view/7228.. Acesso em: 12 oct. 2026.