Isnaini, A., and E. Surya. “PERBEDAAN SELF CONFIDENCE SISWA ANTARA CREATIVE PROBLEM SOLVING DAN DISCOVERY LEARNING DITINJAU DARI GENDER”. IDEAL MATHEDU: Indonesian Digital Journal of Mathematics and Education, Vol. 6, no. 2, Dec. 2019, pp. 640-6, http://p4tkmatematika.kemdikbud.go.id/journals/index.php/idealmathedu/article/view/87.