Lubis, L., Kusumawiyanti, T., Nasution, G. T. D., & Dwirahmadi, F. (2022). Sleep Quality Profile of Mining Workers Based on Pittsburgh Sleep Quality Index (PSQI) . Media Kesehatan Masyarakat Indonesia, 18(4), 140-146. https://doi.org/10.30597/mkmi.v18i4.20154