TADDAGA, T. R.; MUHID, A. THE EFFECTIVENESS OF PSYCHOLOGICAL CAPITAL TRAINING TO IMPROVE THE OPTIMISM ATTITUDE IN MANDIRI ENTERPRISES: LITERATURE REVIEW. Jurnal Ekonomi, Bisnis & Entrepreneurship (e-Journal), [S. l.], v. 16, n. 1, p. 50–59, 2022. DOI: 10.55208/jebe.v16i1.194. Disponível em: https://jurnal.stiepas.ac.id/index.php/jebe/article/view/194. Acesso em: 28 jan. 2023.