Tanjung, July Yanty, et al. “Analisis Kesalahan Mahasiswa Dalam Menyelesaikan Soal Limit Fungsi Berdasarkan Teori Kastolan”. Mandalika Mathematics and Educations Journal, vol. 7, no. 2, May 2025, pp. 391-00, http://jurnalfkip.unram.ac.id/index.php/MANDALIKA/article/view/9014.