A. N. H. Rangkuti, R. Supriadi, M. Z. A. Farisi, and F. H. . Sambo, “Analysis of Speech Acts of Ustadz Adi Hidayat’s Lecture on Success and Happiness: A Study of Locutionary, Illocutionary, and Perlocutionary Acts”, BIP, vol. 7, no. 2, pp. 182–194, Sep. 2025.