Fatkhurrahman, M. R., & Rahadian, M. I. (2025). The Analysis of Customer Service Management in Improving Human Resource Performance at Grapari Telkomsel. Jurnal Bisnis, Ekonomi, Manajemen, Dan Kewirausahaan , 5(2), 48-56. https://doi.org/10.52909/jbemk.v5i1.215