Laksmi, N.P.A.D. 2019. Speech Acts and Principles of Daily in Dental Post Advertisements on Youtube Period (2015-2018). RETORIKA: Jurnal Ilmu Bahasa. 5, 1 (Apr. 2019), 7-11. DOI:https://doi.org/10.22225/jr.5.1.758.7-11.