sirait, Koramen Haulian, Nico Lucito, Lydia Rosintan, and Agustina Suparyati. “Pelatihan Dasar-Dasar Public Speaking Yang Efektif Bagi Komunitas Bank Sampah Di Tambun Selatan”. Dirkantara Indonesia 4, no. 1 (October 13, 2025): 145–152. Accessed June 23, 2026. https://journal.fourzero.id/index.php/di/article/view/171.