Wahyuni, Vera. “Validitas Dan Reliabilitas Instrumen Tes Kemampuan Komunikasi Matematis Materi Relasi Dan Fungsi”. Jurnal Sustainable 5, no. 1 (June 19, 2022): 89-99. Accessed April 24, 2025. http://lp2msasbabel.ac.id/jurnal/index.php/sus/article/view/2232.