Fadhila Yonata, Dwi Rukmini, Suwandi Suwandi, and Sri Wuli Fitriati. “Environment Discourses for Sustainability Development in English Language Coursebooks”. Proceedings of International Conference on Science, Education, and Technology 8, no. 1 (October 15, 2022): 646–653. Accessed July 26, 2025. https://proceeding.unnes.ac.id/ISET/article/view/1816.