Barus, N. S.; Siregar, D. 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 2020, 7, 48-57.