N. R. Gulo, A. Laoli, N. Maru’ao, and A. T. Harefa, “The Use of Clustering Tehnique to Improve Students’ Achievement in Writing Recount Text at the Eight Grade of UPTD SMP Negeri 5 Gunungsitoli in 2022/2023”, edumaspuljr, vol. 8, no. 1, Mar. 2024.