Langan, J. (2005). College writing skills, with readings (6th ed.). McGraw-Hill.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLangan, John. College Writing Skills, with Readings. 6th ed. Boston: McGraw-Hill, 2005.
एमएलए (8वां संस्करण) प्रशस्ति पत्रLangan, John. College Writing Skills, with Readings. 6th ed. McGraw-Hill, 2005.
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