PRABOWO, A.; PUSPA, P.; SETYAWAN, F. Development of test instruments to measure high level thinking ability of two linear variable equations system. International Journal on Education Insight, [S. l.], v. 1, n. 2, p. 91–100, 2021. DOI: 10.12928/ijei.v1i2.3540. Disponível em: http://journal2.uad.ac.id/index.php/ijei/article/view/3540. Acesso em: 19 feb. 2026.