Mahardhika S, Marwinda K, Englishtina I. Mengoptimalkan Kemampuan Public Speaking Siswa SMA melalui Pelatihan Teknik Presentasi yang Efektif. ijest [Internet]. 2025 Feb. 15 [cited 2026 Apr. 29];1(1):10-5. Available from: http://ijest.id/index.php/ijest/article/view/1