Hardiyanto, Sigit, Rehana Salsabila Dalimunthe, Chalisa Audia Lubis, and Syahru Ramadhan Daulay. “Development of Indonesian Association of People With Disabilities (PPDI) Volunteers Based on Digital Applications to Increase Deaf Interaction”. SPEKTA (Jurnal Pengabdian Kepada Masyarakat : Teknologi dan Aplikasi) 5, no. 1 (July 4, 2024): 1–11. Accessed December 22, 2024. http://journal2.uad.ac.id/index.php/spekta/article/view/9138.