Pradana, P. H. “PENINGKATKAN AKTIVITAS DAN HASIL BELAJAR MATEMATIKA MELALUI PEMBELAJARAN KOOPERATIF TIPE JIGSAW”. Education Journal : Journal Educational Research and Development, vol. 1, no. 1, May 2018, pp. 27-34, https://jurnal.unipar.ac.id/index.php/ej/article/view/87.