THE PROMINENT ISSUES OF SECOND LANGUAGE ACQUISITION OF STUDENTS IN ISLAMIC BOARDING SCHOOL AL-ITTIFAQIAH. Al-Iqtishad: Jurnal Ekonomi Syariah, [S. l.], v. 1, n. 1, p. 87–99, 2023. DOI: 10.53649/al-iqtishad.v1i1.307. Disponível em: https://e-journal.uqi.ac.id/index.php/aliqtishad/article/view/307. Acesso em: 15 may. 2026.