AMASTINI, Fitria. Intelligent Tutoring System. Ultima InfoSys : Jurnal Ilmu Sistem Informasi, [S. l.], v. 5, n. 1, p. 1–7, 2014. DOI: 10.31937/si.v5i1.212. Disponível em: https://ejournals.umn.ac.id/index.php/SI/article/view/212. Acesso em: 22 oct. 2025.