Putri Nila Sudewi, N. K., W. Suktiningsih, M. Muhlisin, and N. N. Widani. “A Politeness Strategies in EFL Interaction of Indonesian Students and Lectures”. IdeBahasa, Vol. 5, no. 2, Dec. 2023, pp. 207-18, doi:10.37296/idebahasa.v5i2.138.