Aini, Serlina, et al. “The Effect of Clustering Technique on Students’ Achievement in Writing Skill Recount Text at the Ninth Grades Students of SMPN 5 Masbagik”. Jurnal Studi Guru Dan Pembelajaran, vol. 8, no. 3, Oct. 2025, pp. 1682-91, doi:10.30605/jsgp.8.3.2025.6887.