Romadhon, Yusuf Alam, and Arrizqi Hafidh Abdussalaam. “Korelasi Selisih Terbit Matahari Lokal - Jam Kerja Dengan Status Kesehatan Mental Selama Pandemi Covid-19”. Prosiding University Research Colloquium, Dec. 2021, pp. 279-84, https://repository.urecol.org/index.php/proceeding/article/view/1585.