Ni'matuzzakiyah, Ni'matuzzakiyah, Taqiyuddin Taqiyuddin, Fadhila Yonata, & Muslena Layla. " Using impromptu role-playing as an instructional technique to improve senior high school students' speaking skills in EFL context." Pioneer: Journal of Language and Literature [Online], 18.1 (2026): 16-31. Web. 28 Jul. 2026