HASNA, D. A.; ASTUTI, D. Vocational high school students mathematical problem-solving skills in PBL on composite functions. International Journal on Education Insight, [S. l.], v. 7, n. 1, p. 61–76, 2026. DOI: 10.12928/ijei.v7i1.15623. Disponível em: http://journal2.uad.ac.id/index.php/ijei/article/view/15623. Acesso em: 10 mar. 2026.