Nurhawati Simamora, Mega Ulva Sari Sihombing, and Ahmad Rifki. “Pelatihan Public Speaking Pada Karyawan Di Yayasan Sauri Mitra Utama Medan”. Jurnal Abdimas Mutiara, vol. 3, no. 2, Aug. 2022, pp. 473-6, https://e-journal.sari-mutiara.ac.id/index.php/JAM/article/view/4422.