Marbun, L., & Herwandi, H. (2021). Kesantunan Tuturan Interogatif dalam Acara Online Media Gathering Dampak Covid-19 pada Petani Sawit RSPO dI Youtube. J-LELC: Journal of Language Education, Linguistics, and Culture, 1(1), 79–86. https://doi.org/10.25299/j-lelc.2021.6237