Allan, D. (2004). Placement test 2. Oxford: Oxford University Press.
Trích dẫn kiểu ChicagoAllan, Dave. Placement Test 2. Oxford: Oxford University Press, 2004.
MLA引文Allan, Dave. Placement Test 2. Oxford: Oxford University Press, 2004.
警告：這些引文格式不一定是100％准確.