TINARBUKO, Sumbo. Semiotic of Public Service Advertisement. The Indonesian Journal of Communication Studies, [S. l.], v. 1, n. 2, 2008. DOI: 10.31315/ijcs.v1i2.1328. Disponível em: https://jurnal.upnyk.ac.id/index.php/ijcs/article/view/1328. Acesso em: 22 aug. 2025.