PISHTIWAN ABDULLAH SABER; HADAR AHMAD FARAJ. A Research of English Language Proficiency and its Influence on Business Success in Kurdistan’s Private Sector. Zanco Journal of Human Sciences , [S. l.], v. 30, n. 2, p. 258–269, 2026. DOI: 10.21271/zjhs.30.2.15. Disponível em: https://zancojournal.su.edu.krd/index.php/JAHS/article/view/5095. Acesso em: 22 may. 2026.