Ismi, K. et al. 2021. Analisis Kemampuan Spasial Matematis Ditinjau dari Perbedaan Gender Siswa Kelas VIII. Journal Focus Action of Research Mathematic (Factor M). 4, 1 (Dec. 2021), 53–62. DOI:https://doi.org/10.30762/factor_m.v4i1.3327.