Situmorang, E., R. Onggatta, S. Hamzah, and R. Rangkuti. “President Joko Widodo’s Speech Acts in His Viral Video Visiting Lampung”. Linguistik, Terjemahan, Sastra (LINGTERSA), vol. 4, no. 2, Aug. 2023, pp. 54-61, doi:10.32734/lingtersa.v4i2.12132.