Amalia, Sofri Rizka, et al. “Model Problem Based Learning Berbantuan GeoGebra Dan Model Realistic Mathematics Education Terhadap Representasi Matematis Siswa Ditinjau Dari Gaya Kognitif”. Jurnal Elemen, vol. 6, no. 2, July 2020, pp. 157-66, doi:10.29408/jel.v6i2.1692.