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Erlina Br Manurung, Gultom BT, Sirait PH. The Effect of Teachers’ Leadership and Communication Ability on Students’ Learning Motivation in Class VIII of SMP Negeri 13 Pematang Siantar. IJAR [Internet]. 2023 Jul. 1 [cited 2026 May 21];2(6):589-602. Available from: https://journal.formosapublisher.org/index.php/ijar/article/view/4698