Elny, Sri, Julkarnain Julkarnain, and Iriani Iriani. “Pengaruh Keselamatan, Kesehatan Dan Kualitas Kehidupan Kerja Terhadap Kinerja Karyawan PDAM Tirtana Di Provinsi Sumatera Utara”. Jurnal Simki Economic 6, no. 1 (February 5, 2023): 134-142. Accessed July 3, 2024. https://jiped.org/index.php/JSE/article/view/153.