Yanti, Aprilia Norma, dan Agus Subaidi. “Analysis of Tenth-Grade Students’ Mathematical Logical Thinking Ability in Solving Three-Variable Linear Equation System Problems Viewed From Self-Confidence”. Jurnal Pendidikan dan Pembelajaran 4, no. 02 (Juli 25, 2025). Diakses Agustus 4, 2025. https://ojs.smkmerahputih.com/index.php/juperan/article/view/1059.