Darma, I Ketut, 		Karma, I Gede, 		Santiana, I Made, AND 		E, Irene.
"Need Analysis for Developing Applied Mathematics Teaching Materials Based on Blended Learning to Improve Communication and Problem Solving Abilities by the Students of State Polytechnic of Bali" <em>Soshum: Jurnal Sosial dan Humaniora</em> [Online], Volume 10 Number 2 (31 July 2020)