Amalia, Rindi Dwi, and Rusfandi Rusfandi. “The Effectiveness of Problem-Based Learning in Improving Students’ Writing Descriptive Text in Vocational School”. Jurnal Inspirasi Pendidikan 10, no. 1 (February 3, 2020): 1–11. Accessed November 23, 2024. http://ejournal.unikama.ac.id/index.php/jrnspirasi/article/view/3769.