Ariasih, Putu Ratna, Gusti Made Sutjaja, and Ni Wayan Kasni. 2020. “The Superstructure of Public Service Advertisements on Plastic Waste”. RETORIKA: Jurnal Ilmu Bahasa 6 (1), 50-56. https://doi.org/10.22225/jr.6.1.1294.50-56.