Fajriati, F., Amrullah, and Sahuddin. “TEACHER’S COMPETENCY IN APPLYING PROBLEM-BASED LEARNING MODEL IN TEACHING SPEAKING SKILL: A CASE STUDY AT MA PLUS NURUL ISLAM SEKARBELA”. JURNAL LISDAYA, Vol. 20, no. 2, Dec. 2024, pp. 165-71, https://lisdaya.unram.ac.id/index.php/lisdaya/article/view/110.