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 noviembre 5, 2026. https://mail.amazoniainvestiga.info/index.php/amazonia/article/view/2187.