Langan, J. (2008). English skills with readings (6th ed.). New York: McGraw-Hill.
Trích dẫn kiểu ChicagoLangan, John. English Skills With Readings. 6th ed. New York: McGraw-Hill, 2008.
MLA引文Langan, John. English Skills With Readings. 6th ed. New York: McGraw-Hill, 2008.
警告:这些引文格式不一定是100%准确.