Ferdian, Alfino, Mufrida Meri, and Rozza Linda. 2022. “PENGARUH LINGKUNGAN KERJA FISIK TERHADAP PRODUKTIVITAS KERJA KARYAWAN DI PT. LEMBAH KARET PADANG”. Journal of Applied Engineering Scienties 5 (1), 001-014. https://ojs-ft.ekasakti.org/index.php/JAES/article/view/9.