Ichsa Janand, Handy, Diana Santi, and Rina Rahayu. “Representation of Environmental Awareness in the Song Plastic Tree: A Semiotic Study Based on Ferdinand De Saussure’s Theory”. LITERA : Jurnal Bahasa Dan Sastra 11, no. 2 (July 19, 2025): 145–152. Accessed July 27, 2025. https://jurnal.undhirabali.ac.id/index.php/litera/article/view/3939.