WIDHIGDO, J. C.; AHULUHELUW, J. M.; PANDJAITAN, L. N. The hardiness training to improve psychological well-being of the members of student organization at Universitas Surabaya. Jurnal Psikologi Ulayat, [S. l.], v. 7, n. 2, p. 122–139, 2020. DOI: 10.24854/jpu104. Disponível em: https://publication.k-pin.org/index.php/jpu/article/view/104. Acesso em: 23 feb. 2024.