2023. THE PROMINENT ISSUES OF SECOND LANGUAGE ACQUISITION OF STUDENTS IN ISLAMIC BOARDING SCHOOL AL-ITTIFAQIAH. Al-Iqtishad: Jurnal Ekonomi Syariah. 1, 1 (Jul. 2023), 87–99. DOI:https://doi.org/10.53649/al-iqtishad.v1i1.307.