Wilujeng Hari Safitri, and Diani Nurhajati. “Teaching Writing Using Problem Based Learning (PBL) to The Students at SMPI Annur Alghozali”. ELTT, vol. 9, no. 1, Oct. 2023, pp. 249-60, https://proceeding.unpkediri.ac.id/index.php/eltt/article/view/4244.