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: Aug. 26, 2026. [Online]. Available: https://monograph.uthm.edu.my/index.php/penerbituthm/catalog/book/537