Yusuf Devan, A. Alpindro, R. Rohil, and L. M. Angraini. “Analisis Kesulitan Siswa SMP Dalam Menyelesaikan Soal Statistika”. Progressive of Cognitive and Ability, vol. 3, no. 3, July 2024, pp. 188-99, doi:10.56855/jpr.v3i3.1049.