Indra Perkasa, Khaessar, Emzir Emzir, Ratna Dewanti, and Ratna Dewanti. “ENHANCING ENGLISH SPEAKING SKILL THROUGH JIGSAW COOPERATIVE LEARNING (Action Research In X Class of MIA SMA Negeri 2 DKI Jakarta)”. Bahtera: Jurnal Pendidikan Bahasa dan Sastra 17, no. 2 (July 14, 2018): 46-53. Accessed March 29, 2024. https://journal.unj.ac.id/unj/index.php/bahtera/article/view/7624.