AISYAH, Sri Khansa; SARWOPRASODJO, Sarwititi. Plastic Free Market Campaign: The Effect of Message Elaboration Level on Trader’s Attitudes. Ultimacomm: Jurnal Ilmu Komunikasi, [S. l.], v. 16, n. 1, p. 123–142, 2024. DOI: 10.31937/ultimacomm.v16i1.3386. Disponível em: https://ejournals.umn.ac.id/index.php/FIKOM/article/view/3386. Acesso em: 22 may. 2025.