Nurul Laili Kurniati. “STRATEGI PENINGKATAN KUALITAS PELAYANAN PT. KERETA API INDONESIA (Persero) UNTUK KEPUASAN PELANGGANAN PADA MASA PANDEMI COVID-19 DI MEDAN (UPT BALAI YASA PULUBRAYAN)”. JOURNAL OF ADMINISTRATIVE AND SOCIAL SCIENCE 4, no. 1 (January 16, 2023): 195–199. Accessed October 3, 2024. https://journal-stiayappimakassar.ac.id/index.php/jass/article/view/145.