Marpaung, M., P. Manurung, and J. Simajuntak. “Analisis Konsep Probabilitas Dalam Matematika: Studi Literatur”. Jurnal Ilmiah Wahana Pendidikan, Vol. 12, no. 8.D, Sept. 2026, pp. 113-9, https://jurnal.peneliti.net/index.php/JIWP/article/view/14832.