Polin, M., Lerik, M. and Benu, J. 2023. The Optimism and Problem-Focused Coping in Students Who Work Part-Time in the City of Kupang. Journal of Health and Behavioral Science. 5, 3 (Dec. 2023), 368-375. DOI:https://doi.org/10.35508/jhbs.v5i3.10832.