The Effect of Classical Guidance Using the “Self Dev” Podcast Media on the Self-Confidence of Grade XI Students at SMA Negeri 18 Medan. Insight: Journal of Counseling and Psychology, [S. l.], v. 1, n. 1 December, p. 21–27, 2026. Disponível em: https://esp-journal.com/index.php/insight/article/view/28. Acesso em: 21 apr. 2026.