THE TRAINING OF GRATEFULNESS IN IMPROVING LIFE MEANING OF CONVICTS AT CLASS 2 LPKA PEKANBARU. Psikis : Jurnal Psikologi Islami, [S. l.], v. 6, n. 1, p. 42–47, 2020. DOI: 10.19109/psikis.v6i1.4992. Disponível em: https://jurnal.radenfatah.ac.id/index.php/psikis/article/view/4992.. Acesso em: 15 may. 2025.