Harrison, M. (2006). IELTS practice tests. Boston, MA: Thomson ELT.
Trích dẫn kiểu ChicagoHarrison, Mark. IELTS Practice Tests. Boston, MA: Thomson ELT, 2006.
MLA引文Harrison, Mark. IELTS Practice Tests. Boston, MA: Thomson ELT, 2006.
警告:這些引文格式不一定是100%准確.