YUSJAH, Muhammad Nabil Najmi; ABD KAHAR, Hartiny; AMAT RITHUAN, Muhamad Zulfahizal. Smart Step Ladder. Multidisciplinary Applied Research and Innovation, [S. l.], v. 2, n. 3, p. 154–158, 2021. Disponível em: https://publisher.uthm.edu.my/periodicals/index.php/mari/article/view/5086. Acesso em: 8 apr. 2026.