1.
Amalia RD, Rusfandi R. The Effectiveness of Problem-Based Learning in Improving Students’ Writing Descriptive Text in Vocational School. JIP [Internet]. 2020 Feb. 3 [cited 2026 Sep. 30];10(1):1-11. Available from: https://ejournal.unikama.ac.id/index.php/jrnspirasi/article/view/3769