Tarigan, S., N. Barimbing, S. Saragih, and S. Sianturi. “Improving Students’ Speaking Skill Through Debate Technique at Second Grade Students’ of Senior High School”. Jurnal Ilmiah Wahana Pendidikan, Vol. 8, no. 24, Dec. 2022, pp. 467-73, doi:10.5281/zenodo.7494665.