CAHYOWATI, Tri Diah; SARA, Mutiara Leinsove. Progam Caring Untuk Merentensi Pelanggan Telkom Flexi. Marcommers : Jurnal Marketing Communication and Advertising, Jakarta, Indonesia, v. 2, n. 1, p. 1–11, 2019. DOI: 10.22441/marcommers.v2i1.7345. Disponível em: https://publikasi.mercubuana.ac.id/index.php/marcommers/article/view/7345. Acesso em: 3 jun. 2026.