Rosziati Ibrahim, Norfaradilla Wahid, Norhanifah Murli, and Hanayanti Hafit. System Analysis and Design Using Unified Modeling (UML) and Data Flow Diagram (DFD). Penerbit UTHM, 2026. Accessed April 9, 2026. https://penerbit.uthm.edu.my/omp/index.php/penerbituthm/catalog/book/537.