Masruroh, Yulfah, Iskandar Iskandar, and Elly Fatmasari. “English Language Learning Achievement in Public Middle-School 1 Kertanegara: The Effects of ‘Jigsaw’ Method”. ETDC: Indonesian Journal of Research and Educational Review 1, no. 4 (September 27, 2022): 571–580. Accessed January 24, 2026. https://etdci.org/journal/ijrer/article/view/371.