N. S. Barus and D. Siregar, “LITERATURE REVIEW: THE EFFECTIVENESS OF CLASSIC MUSIC THERAPY TOWARDS AUDITORY HALLUCINATION IN SCHIZOPHRENIA PATIENT [KAJIAN LITERATUR: EFEKTIVITAS TERAPI MUSIK KLASIK TERHADAP HALUSINASI PENDENGARAN PADA PASIEN SKIZOFERNIA]”, NC, vol. 7, no. 2, pp. 48–57, Feb. 2020.