anam, M. Khairul, Esi Emerlada, Susi Erlinda, Tashid Tashid, and Torkis Nasution. “The Application of Usability Testing to Analyze the Quality of Android-Based Acupressure Smart Chair Applications”. MATRIK : Jurnal Manajemen, Teknik Informatika dan Rekayasa Komputer 22, no. 2 (March 31, 2023): 217-226. Accessed May 8, 2024. https://journal.universitasbumigora.ac.id/index.php/matrik/article/view/2312.