The Implementation Of Project Based Learning (PjBL) To Improve The Students’ Writing Skill At Seventh Grade Of SMP Swasta YPK Pematang Siantar. jbl [Internet]. 30 April 2024 [dikutip 1 November 2025];6(1):50 – 55. Tersedia pada: https://jurnal.usi.ac.id/index.php/jbl/article/view/1052