Southwestern Company & Hughes, J. (1997). Student handbook: Desk reference. Southwestern.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSouthwestern Company और James Hughes. Student Handbook: Desk Reference. Nashville, TN: Southwestern, 1997.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSouthwestern Company और James Hughes. Student Handbook: Desk Reference. Southwestern, 1997.
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