DWI ROHYANI; ANANDA, D. . Knowledge Level Relationship With Community Behavior Concerning Mask Use During The Covid-19 Pandemic In Langkat District, North Sumatera Province. Jurnal Ilmiah Kesehatan Diagnosis, [S. l.], v. 16, n. 3, p. 141-146, 2021. Disponível em: https://jurnal.stikesnh.ac.id/index.php/jikd/article/view/474. Acesso em: 19 may. 2024.