Celik, Bunyamin, y Saban Kara. «Students' Perceptions of the General English Proficiency Test: A Study on Tishk International University Students in Erbil, Iraq». Amazonia Investiga 11, no. 59 (diciembre 15, 2022): 10–20. Accedido diciembre 17, 2025. https://amazoniainvestiga.info/index.php/amazonia/article/view/2187.