Hardiyanto S, Dalimunthe RS, Lubis CA, Daulay SR. Development of Indonesian Association of People with Disabilities (PPDI) Volunteers Based on Digital Applications to Increase Deaf Interaction. Spekta [Internet]. 2024Jul.4 [cited 2024Dec.22];5(1):1-11. Available from: http://journal2.uad.ac.id/index.php/spekta/article/view/9138