J. S. Al-Showaily and M. J. Saiwan, “The Effect of Sleep Disturbances on the Severity of Depression in Psychiatric Patients: Pengaruh Gangguan Tidur terhadap Keparahan Depresi pada Pasien Psikiatri”, ijhsm, vol. 2, no. 3, p. 10.21070/ijhsm.v2i3.288, Oct. 2025.