., Sumartini, Hilda Puspita, and Zahrida . “THE EFFECT OF CLUSTERING TECHNIQUE ON STUDENTS’ WRITING ABILITY”. Journal of English Education and Teaching 2, no. 2 (September 10, 2018): 83–92. Accessed May 1, 2024. https://ejournal.unib.ac.id/JEET/article/view/5695.