AZHAR, Nurul Syuhada. SMART LETTER BOX FOR HIGH-RISE RESIDENTIAL BUILDING. Journal of Computing Technologies and Creative Content, [S. l.], v. 4, n. 1, 2019. Disponível em: https://ejournal.unikl.edu.my/index.php/JTeC/article/view/741. Acesso em: 14 mar. 2026.