Hasibuan, Siti Aminah. “IMPROVING STUDENT’S SPEAKING SKILL BY USING BRAINSTORMING METHOD OF THE TENTH GRADE IN SMA UNGGULAN UMMU RAHMAH IN 2020 2021”. Pedagogi: Jurnal Ilmiah Pendidikan 7, no. 2 (Juli 23, 2021): 88–92. Diakses Juli 6, 2024. https://siakad.univamedan.ac.id/ojs/index.php/pedagogi/article/view/317.