Manurung, Hisar Marulitua, and Juni Agus Simaremare. 2022. “Development of Interactive Organic Chemistry E-Module Using Macromedia Flash Improves Concept Mastery”. International Journal of Multidisciplinary: Applied Business and Education Research 3 (10), 2132-41. https://doi.org/10.11594/ijmaber.03.10.25.