Pramujiono, A., T. Nurhadi, N. Nurjati, F. Dian Andanty, and A. Widya Hanindita. “The Prosodic Aspects of Politeness in Instructional Interactions of Elementary School Teachers in Surabaya”. KnE Social Sciences, Vol. 7, no. 6, Mar. 2022, pp. 181–195, doi:10.18502/kss.v7i6.10621.