Halliwell, H. (2007). Top score: WorkBook 2. Oxford: Oxford University Press.
Trích dẫn kiểu ChicagoHalliwell, Helen. Top Score: WorkBook 2. Oxford: Oxford University Press, 2007.
MLA引文Halliwell, Helen. Top Score: WorkBook 2. Oxford: Oxford University Press, 2007.
警告：這些引文格式不一定是100％准確.