IFEANYI MARTINS NWOKEOCHA, PHD. Effectiveness of Public Service Announcements in Promoting Social Causes. Social Sciences Journal, [S. l.], v. 1, n. 1, p. 91–110, 2024. DOI: 10.59971/ssj.v1i1.15. Disponível em: https://journal.pdphi.com/index.php/SSJ/article/view/15. Acesso em: 13 may. 2026.