Lena, Mai Sri, Netriwati Netriwati, Ika Suryanita, Fastabuqul Khairat, and Ulfah Putri Efendi. 2023. “Lasswell Communication Model to Improve Students’ Mathematical Concepts Understanding Ability”. International Journal on Emerging Mathematics Education 6 (2):141-48. https://doi.org/10.12928/ijeme.v6i2.20913.