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Hasibuan SW. STUDI KEGAGALAN INSTRUKSI KELAS DI KURSUS BAHASA INGGRIS ESSENTIAL MEDAN. JURNAL PAI [Internet]. 2020 Jan. 10 [cited 2025 Dec. 26];4(1):52-63. Available from: https://journal.staidarularafah.ac.id/index.php/JURNALMAKRIFAT/article/view/47