Radiusman, R. and Simanjuntak, M. (2020) “Pengaruh Pendekatan Concrete-Pictorial-Abstract (CPA) terhadap Kemampuan Representasi Matematis pada Topik Trigonometri”, MUST: Journal of Mathematics Education, Science and Technology, 5(2), pp. 118–129. doi: 10.30651/must.v5i2.5809.