Saepul Rohman R, Firmansah DA, Ermawati E. RANCANG BANGUN APLIKASI E-SERTIFIKAT BERBASIS WEB MENGGUNAKAN METODE USER CENTERED DESIGN . j. responsif ris. sains inform. [Internet]. 2022 Feb. 15 [cited 2026 Sep. 23];4(1):1-11. Available from: https://ejurnal.ars.ac.id/index.php/jti/article/view/647