Rajagukguk, Sintia Friskila, Kammer Tuahman Sipayung, Arsen Nahum Pasaribu, and Erika Sinambela. “Teachers’ Creativity in Designing English Teaching Learning Material by Prajabatan Student Program Profesi Guru (PPG) Batch II”. Inovasi Kurikulum 21, no. 1 (February 21, 2024): 125–136. Accessed September 22, 2026. https://ejournal-hipkin.or.id/index.php/jik/article/view/484.