The Effectiveness of Using Picture Strategy in Improving Speaking Abilty At The Second Grade Of SMA Negeri 3 Pematangsiantar. jbl [Internet]. 25 April 2022 [dikutip 1 November 2025];4(1):18-23. Tersedia pada: http://jurnal.usi.ac.id/index.php/jbl/article/view/1004