Oxenden C. Clive & Latham-Koenig C. Christina. (2008). New English File. Upper-Intermediate: Woorkbook. New York, Oxford University Press, 2008.
芝加哥风格引文Oxenden C. Clive 与 Latham-Koenig C. Christina. New English File. Upper-Intermediate: Woorkbook. New York, Oxford University Press, 2008, 2008.
MLA引文Oxenden C. Clive 与 Latham-Koenig C. Christina. New English File. Upper-Intermediate: Woorkbook. New York, Oxford University Press, 2008, 2008.
警告：这些引文格式不一定是100％准确.