Gratitude Training: Improving Life Expectancy for People with Chronic Diseases. Psikis : Jurnal Psikologi Islami, [S. l.], v. 10, n. 2, p. 211–222, 2024. DOI: 10.19109/psikis.v10i2.24144. Disponível em: https://jurnal.radenfatah.ac.id/index.php/psikis/article/view/24144.. Acesso em: 2 apr. 2025.