GAWAS, A. G. A. The Effect of Optimism, Happiness and Self-esteem on Quality of Life among Yemeni University Students. Indonesian Psychological Research, [S. l.], v. 6, n. 1, p. 17–28, 2024. DOI: 10.29080/ipr.v6i1.1168. Disponível em: https://jurnalfpk.uinsby.ac.id/index.php/IPR/article/view/1168. Acesso em: 12 may. 2024.