Permana, Dira, Heri Hidayatullah, and Nurul Hafizah. “The Effectiveness of Chain Drill Technique in Teaching Speaking”. Jurnal Kependidikan 4, no. 2 (September 26, 2018): 133–140. Accessed September 29, 2025. https://ojspanel.undikma.ac.id/index.php/jurnalkependidikan/article/view/1120.