Liping, Chen. “Mood, Modality and Polarity Analysis of Winston S. Churchill’s Speech on Hitler’s Invasion of the U.S.S.R”. Advances in Social Sciences Research Journal 4, no. 1 (January 25, 2017). Accessed February 4, 2026. https://www.journals.scholarpublishing.org/index.php/ASSRJ/article/view/2625.