(2006). IELTS express. Boston, MA: Thomson.
Trích dẫn kiểu ChicagoIELTS Express. Boston, MA: Thomson, 2006.
MLA引文IELTS Express. Boston, MA: Thomson, 2006.
警告:這些引文格式不一定是100%准確.
(2006). IELTS express. Boston, MA: Thomson.
Trích dẫn kiểu ChicagoIELTS Express. Boston, MA: Thomson, 2006.
MLA引文IELTS Express. Boston, MA: Thomson, 2006.