Sembiring, D. J. M., Br Perangin-angin, S. M., Br Surbakti, A., & Br Ginting, D. P. S. (2024). Development Of An Android Based Application For A Certification Management Information System For A Certification Institute: Design And Implementation. Jurnal Info Sains : Informatika Dan Sains, 14(02), 82–92. https://doi.org/10.54209/infosains.v14i02.4291