Erwina, Emmy, Alvy Mawaddah, and Muhammad Kiki Wardana. “Intonation and Intensity of President Joko Widodo’s Speech”. International Journal of Culture and Art Studies 9, no. 1 (April 30, 2025): 64–72. Accessed August 4, 2025. https://idjpcr.usu.ac.id/ijcas/article/view/20265.