Macfarlane, M. (1994). Open doors: Workbook 1. Oxford: Oxford University Press.
Trích dẫn kiểu ChicagoMacfarlane, Mike. Open Doors: Workbook 1. Oxford: Oxford University Press, 1994.
MLA引文Macfarlane, Mike. Open Doors: Workbook 1. Oxford: Oxford University Press, 1994.
警告：这些引文格式不一定是100％准确.