Kandaga Surya Ardina Pathir, Ruminda, and Udayani Permanaludin. “TYPES OF POLITENESS STRATEGIES IN JOE BIDEN’S CAMPAIGN SPEECH”. Jurnal Sastra - Studi Ilmiah Sastra 14, no. 2 (December 31, 2024): 01-08. Accessed January 17, 2025. http://45.118.112.109/ojspasim/index.php/sastra/article/view/508.