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Najwa Nurfajriah, Imam Tabroni, Nursyifa Faujiah, Ridha Nurjannah, Tiara Putri. Problem Based Learning (PBL): Concrete Steps to Improve Students’ Communication Skills. IJIS [Internet]. 2023 Feb. 4 [cited 2024 Sep. 19];1(1):7-20. Available from: https://journal.formosapublisher.org/index.php/ijis/article/view/2973