THE CHALLENGES OF TEACHING EFL FOR ADULTLEARNERS: ONLINE LEARNING  DURING THE COVID-19 PANDEMIC. Jurnal Ilmiah Spectral, [S. l.], v. 7, n. 1, p. 011–028, 2021. Disponível em: http://journal.stbapontianak.ac.id/index.php/spectral/article/view/72. Acesso em: 8 feb. 2026.