Nurwanti, N., Lasitiha, H. I. . and Ikosusilowati, I. (2022) “The Effectiveness of Using Group Investigation Technique To Enhance Students Speaking Ability at Lakidende University”, Jurnal Pendidikan dan Konseling (JPDK), 4(5), pp. 425–430. doi: 10.31004/jpdk.v4i5.6624.