Randi Pratama, Munirah, and Andi Sukri Syamsuri. “Studying Indonesian-Speaking Politeness for Class XI Students at SMK Negeri Tapango, Polman Regency”. RETORIKA: Jurnal Ilmu Bahasa, Vol. 9, no. 1, Apr. 2023, pp. 75-83, doi:10.55637/jr.9.1.5758.75-83.