Iflatul Mus’ifah, Naila Rahma Mufida, and Fatma Azzahra Nur’aini. “the ExShapes Math Card Product Market Research Analysis”. Journal of Education Policy Analysis, vol. 2, no. 1, June 2024, pp. 18-27, http://businessandfinanceanalyst.com/index.php/JEPA/article/view/174.