Rangkuti ANH, Supriadi R, Farisi MZA, Sambo FH. Analysis of Speech Acts of Ustadz Adi Hidayat’s Lecture on Success and Happiness: A Study of Locutionary, Illocutionary, and Perlocutionary Acts. BIP [Internet]. 2025 Sep. 27 [cited 2026 Oct. 30];7(2):182-94. Available from: http://139.162.50.187/index.php/BIP/article/view/7473