Abror, Mochammad. “The Implementation of Undergraduate Students’ Critical Thinking on the Composition of Paper Essay in Paper Writing Class”. RETAIN : Journal of Research in English Language Teaching 9, no. 1 (June 5, 2021): 147-156. Accessed May 3, 2024. https://ejournal.unesa.ac.id/index.php/retain/article/view/39523.