“Design and Implementation of a Programmable Locking Quotation Submission Box for Majlis Perbandaran Pasir Gudang”, BEAM, vol. 3, no. 3, pp. 64–72, Jun. 2025, Accessed: Aug. 12, 2025. [Online]. Available: https://beam.pmu.edu.my/index.php/beam/article/view/190