Aisyah, Sri Khansa, and Sarwititi Sarwoprasodjo. “Plastic Free Market Campaign: The Effect of Message Elaboration Level on Trader’s Attitudes”. Ultimacomm: Jurnal Ilmu Komunikasi, vol. 16, no. 1, Nov. 2024, pp. 123-42, doi:10.31937/ultimacomm.v16i1.3386.