Pratiwi, Ayu, et al. “Progressive Muscle Relaxation on Depression Levels in Schizophrenia Patients Treated in Griya Medika”. Jurnal Keperawatan Profesional (KEPO), vol. 6, no. 2, Nov. 2025, pp. 314-20, https://salnesia.id/kepo/article/view/1487.