Sidabutar, H. ., and R. B. . Tamaro Sitorus. “Development of Interactive Multimedia Based on Adobe Flash Integrated With Character Values on the Respiratory System Materials”. Educenter : Jurnal Ilmiah Pendidikan, vol. 1, no. 9, Sept. 2022, pp. 611-7, doi:10.55904/educenter.v1i9.394.