NASUTION, A. I.; ROHANI; TRISTIANA, D. W. Modification Of The Model Problem Solving Learning With The Approach Of Offline in Class X Private SMK az zahra sonomartani. International Journal Of Humanities Education and Social Sciences (IJHESS) , [S. l.], v. 1, n. 2, 2021. DOI: 10.55227/ijhess.v1i2.40. Disponível em: http://ijhess.com/index.php/ijhess/article/view/40. Acesso em: 4 jun. 2026.