Asrial A, Syahrial S, Kurniawan DA, Perdana R, Nugroho P. Supporting Technology 4.0: Ethoconstructivist Multimedia for Elementary Schools. Int. J. Onl. Eng. [Internet]. 2019 Oct. 26 [cited 2024 May 2];15(14):pp. 54-66. Available from: https://online-journals.org/index.php/i-joe/article/view/11365