M. . Sahrain, R. Hendriani, and H. Herman, “Politeness Strategy Analysis of Speech Acts between Lecturer and Students in English Classroom ”, <meta name="google-site-verification" content="hk1EvV2s9SCchFUV_4f7GgLdW5pQDckkxwSCWkj4stU" />, vol. 4, no. 1, pp. 399–407, Mar. 2026.