Worung, Gladys Livia, Frendy A. O. Pelleng, and Dantje Keles. 2020. “Analisis Kualitas Pelayanan Pos Indonesia Cabang Tanawangko”. Productivity 1 (5):430-35. https://ejournal.unsrat.ac.id/v3/index.php/productivity/article/view/30802.