Sipayung, A. M., Herman and Silalahi, D. E. (2019) “The Politeness between the Teacher and Students at Grade Ten of SMATeladan Pematangsiantar”, Journal of English Teaching as a Foreign Language, 5(2), pp. 12-24. Available at: https://ejournal.uhn.ac.id/index.php/jetafl/article/view/120 (Accessed: 16May2024).