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, vol. 8, no. 1, Oct. 2022, pp. 646-53, https://proceeding.unnes.ac.id/ISET/article/view/1816.