Anggraeni, Y., L. M. Indrayani, and Y. S. Soemantri. “The Expressive Speech Act on Ridwan Kamil’s Comments in Instagram Posting about First COVID-19 Case in Indonesia”. Journal of English Education and Teaching, vol. 4, no. 3, Sept. 2020, pp. 368-85, doi:10.33369/jeet.4.3.368-385.