Monippally, M. (1997). The craft of business letter writing. TMH.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMonippally, Mathew. The Craft of Business Letter Writing. New delhi: TMH, 1997.
एमएलए (9वां संस्करण) प्रशस्ति पत्रMonippally, Mathew. The Craft of Business Letter Writing. TMH, 1997.
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