Zhu Yitong. An Ecological Discourse Analysis of Silent Spring from the Perspective of Corpus-based Attitude System: Human Image as an Example. IJLLT [Internet]. 2023 Apr. 1 [cited 2026 Apr. 19];6(4):04-9. Available from: https://al-kindipublishers.org/index.php/ijllt/article/view/5067