Lubis L, Kusumawiyanti T, Nasution GTD, Dwirahmadi F. Sleep Quality Profile of Mining Workers Based on Pittsburgh Sleep Quality Index (PSQI) . MKMI [Internet]. 2022Dec.30 [cited 2024Apr.20];18(4):140-6. Available from: https://journal.unhas.ac.id/index.php/mkmi/article/view/20154