SAMSUNI, Muhamad husni bin samsuni; SHAARI, Muhammad Farid. Development of Vending Machine Operation System Using Programmable Logic Controller (PLC). Progress in Engineering Application and Technology, [S. l.], v. 2, n. 1, p. 930–936, 2021. Disponível em: https://publisher.uthm.edu.my/periodicals/index.php/peat/article/view/979.. Acesso em: 3 may. 2024.