Mulyadi, Mulyadi. “Perancangan Sistem Validasi Label Kemasan Dengan Metode System Development Life Cycle (SDLC)”. Journal of Green Engineering for Sustainability 1, no. 2 (April 30, 2024): 70–77. Accessed August 9, 2025. http://journal.uvers.ac.id/index.php/greeners/article/view/212.