Black, M. (2006). Objective IELTS Student's Book. Intermediate. Cambridge University Press.
Trích dẫn kiểu ChicagoBlack, Michael. Objective IELTS Student's Book. Intermediate. Cambridge University Press, 2006.
ציטוט MLABlack, Michael. Objective IELTS Student's Book. Intermediate. Cambridge University Press, 2006.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.