PURNA WIRATNO, HAJJAH ZULIANTI, and OSHA NABILA. “WORD GROUPING ACTIVITY TO IMPROVE STUDENTS’ VOCABULARY MASTERY: A CLASSROOM ACTION RESEARCH”. JETA (Journal of English Teaching and Applied Linguistic), vol. 4, no. 1, June 2023, pp. 36-44, doi:10.52217/jeta.v4i1.1234.