Carascalao, Oscar, Dwi Anggani Linggar Bharati, and Abdurrachman Faridi. 2019. “The Effectiveness of Inside-Outside Circle and Jigsaw Techniques in Teaching Interpersonal Conversation for High and Low Self-Confident Students”. English Education Journal 9 (1), 114-27. https://doi.org/10.15294/eej.v9i1.28069.