E. S. . Ana Wulandari, A. . Damiri, and P. Wiratno, “IMPROVING STUDENTS’ VOCABULARY THOURGH GROUP CHAT DISCUSSION ON WHATSAPP AT EIGHT GRADE STUDENTS AT SMP N 22 BANDAR LAMPUNG THE ACADEMIC YEAR OF 2022/2023”, jees, vol. 4, no. 2, pp. 1–5, Dec. 2022.