ANALISIS USABILITY PADA PLATFORM GREDU BELAJAR DI SEKOLAH MENENGAH KEJURUAN NEGERI 1 SAYUNG DEMAK. Tunjuk Ajar : Jurnal Penelitian Ilmu Pendidikan, [S. l.], v. 6, n. 2, p. 87–98, 2023. DOI: 10.33578/. Disponível em: https://jta.ejournal.unri.ac.id/index.php/JTA/article/view/149. Acesso em: 21 dec. 2025.