KASENDA, R.; JAEL, S. A. Effects of Laughter on Quality and Hours of Sleep and Blood Pressure among Elderly in Indonesia. Journal of International Scholars Conference - ALLIED HEALTH, [S. l.], v. 1, n. 5, p. 62-70, 2016. Disponível em: https://jurnal.unai.edu/index.php/jiscah/article/view/385. Acesso em: 8 may. 2021.