G. Abbas Abdulzahra Al- Saedl and J. Majld Bachay Al- Behadily, “Engineering of nun of Surat Al – Rahman the sound of ‘nun’as a model ”, Psychosocial rehabilitation, vol. 24, no. 3, pp. 6441–6446, May 2020, doi: 10.61841/5p2wj754.