Porter, D. (2008). Check your vocabulary for academic English. London: Macmillan.
Trích dẫn kiểu ChicagoPorter, David. Check Your Vocabulary for Academic English. London: Macmillan, 2008.
MLA引文Porter, David. Check Your Vocabulary for Academic English. London: Macmillan, 2008.
警告:這些引文格式不一定是100%准確.