O. Bola, A. Aulia, F. Azhari Formen, O. Amirah Rafi, and Y. Yusnel, “Practicality Study of E-Learning Development on Electrolyte and Non-Electrolyte Solution Using the Flipped Classroom-Project Based Learning Approach in Senior High School”, JHICE, vol. 1, no. 01, pp. 24-33, Jun. 2021.