Langan, J. (1995). English skills with readings (3rd ed.). McGraw-Hill.
芝加哥风格引文Langan, John. English Skills with Readings. 3rd ed. New York: McGraw-Hill, 1995.
MLA引文Langan, John. English Skills with Readings. 3rd ed. McGraw-Hill, 1995.
警告:这些引文格式不一定是100%准确.