HERAWATI, Reni. Learning Impromptu Speech through Peer Activity to Enhance Students’ Speaking Competence. Jurnal Ilmiah Guru Caraka Olah Pikir Edukatif, [S. l.], v. 14, n. 01, 2010. DOI: 10.21831/jig cope.v14i01.5506. Disponível em: https://jurnal.uny.ac.id/index.php/cope/article/view/5506. Acesso em: 19 jun. 2025.