Supriadi, et al. “ANALISIS KESALAHAN PEMAHAMAN KONSEP MATEMATIKA PADA MATERI METODE DUAL SIMPLEKS”. KAMBIK: Journal of Mathematics Education, vol. 2, no. 1, July 2024, pp. 80-89, http://ejournal.um-sorong.ac.id/index.php/jme/article/view/3539.