Polin, Megaliana, Mariana Lerik, and Juliana Benu. “The Optimism and Problem-Focused Coping in Students Who Work Part-Time in the City of Kupang”. Journal of Health and Behavioral Science 5, no. 3 (December 17, 2023): 368-375. Accessed July 22, 2024. https://ejurnal.undana.ac.id/index.php/CJPS/article/view/10832.