Tanjung, Selvira Wardani, and Nurbaiti Nurbaiti. “Service Quality Analysis of PT. Pos Indonesia (Persero) Sibolga City Branch 22500”. Jurnal Ekonomi, Manajemen, Akuntansi Dan Keuangan, vol. 3, no. 4, Oct. 2022, pp. 1513 – 1524, doi:10.53697/emak.v3i4.1022.