Nazar Azkhaf and Masriatus Sholikhah 2020. Presupposition Triggers in “The Big Bang Theory Season Nine” Situational Comedy. SELL (Scope of English Language Teaching, Linguistics, and Literature) Journal. 2, 1 (Nov. 2020), 24–35. DOI:https://doi.org/10.31597/sl.v2i1.509.