Masbirorotni, Masbirorotni, and Okky Wulandari. 2020. “Improving Students’ Academic Achievement in English Subject By Using Jigsaw: (Meningkatkan Prestasi Akademik Siswa Di Bahasa Inggris Dengan Menggunakan Jigsaw)”. Indonesian Educational Administration and Leadership Journal (IDEAL) 2 (1):42-54. https://doi.org/10.22437/ideal.v2i1.9928.