HALIL, Nur Ihsan; TAKWA; MUSLIHA. Implementation of Linguistic politeness throughout Online Lectures via WhatsApp during the Covid-19 Pandemic. Jurnal Penelitian dan Pengkajian Ilmu Pendidikan: e-Saintika, [S. l.], v. 5, n. 3, p. 195–211, 2021. DOI: 10.36312/esaintika.v5i3.484. Disponível em: https://journal-center.litpam.com/index.php/e-Saintika/article/view/484. Acesso em: 7 feb. 2026.