SUPARJO; SINAMBELA, E.; MANURUNG, L. W. x. Contribution of English Speech Competition on Students’ Motivation and Self-Confidence For Public Speaking at SMA Negeri 1 Gebang. Journal of Language Education (JoLE), [S. l.], v. 3, n. 4, p. 19–26, 2025. DOI: 10.69820/jole.v3i4.442. Disponível em: https://merwinspy.org/journal/jole/article/view/442. Acesso em: 4 jul. 2026.