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: Apr. 07, 2026. [Online]. Available: https://publisher.uthm.edu.my/omp/index.php/penerbituthm/catalog/book/537