Astuti, Novia, AND 		Suhartono, Suhartono.
" Pengaruh Terapi Musik Klasik Terhadap Perkembangan Kognitif Anak Terhadap Tuna Grahita Embisil Ringan" <em>Indonesian Journal of Professional Nursing</em> [Online], Volume 1 Number 2 (2 March 2021)