Apriliani, L., and H. Suyitno. “KEMAMPUAN BERPIKIR KREATIF MATEMATIS BERDASARKAN KECEMASAN MATEMATIKA PADA PEMBELAJARAN CREATIVE PROBLEM SOLVING BERTEKNIK SCAMPER”. Unnes Journal of Mathematics Education Research, Vol. 5, no. 2, Feb. 2017, pp. 131-8, https://journal.unnes.ac.id/sju/ujmer/article/view/12929.