Nisaa Yasmin bt Nor Izuddin and Huda bin A Majid (2021) “IoT Monitoring System for Vending Machine”, Progress in Engineering Application and Technology, 2(1), pp. 514–521. Available at: https://penerbit.uthm.edu.my/periodicals/index.php/peat/article/view/691 (Accessed: 18 July 2024).