T. Listiani, K. P. S. Dirgantoro, M. J. Saragih, and K. P. Tamba, “ANALISIS KESALAHAN MAHASISWA PENDIDIKAN MATEMATIKA DALAM MENYELESAIKAN SOAL GEOMETRI PADA TOPIK BANGUN RUANG [ERROR ANALYSIS OF STUDENTS IN THE MATHEMATICS DEPARTMENT IN SOLVING GEOMETRY PROBLEMS ON THE TOPIC OF SOLID FIGURES]”, JOHME, vol. 3, no. 1, pp. 44–62, Dec. 2019.