Julianti, Kiptiana Dwi, Subiyantoro, and Niza Nurmalasari. “Customer Relationship Management Strategy at PT POS Indonesia (Persero) Ngawi Branch Office”. Epicheirisi: Jurnal Manajemen, Administrasi, Pemasaran dan Kesekretariatan 7, no. 2 (November 15, 2023): 1–9. Accessed November 22, 2024. https://journal.pnm.ac.id/index.php/epicheirisi/article/view/623.