Yundayani, A., and dian kardijan. “IMPROVING STUDENTS’ ORAL PRESENTATION PERFORMANCE THROUGH THE USE OF VISUAL MEDIA IN SMALL GROUP DISCUSSION”. JELL (Journal of English Language and Literature) STIBA-IEC Jakarta, Vol. 3, no. 02, Aug. 2018, pp. 103-14, doi:10.37110/jell.v3i02.55.