Nirmal Singh. (2009). Business Communication: Principles,Methods and Techniques. Deep and Deep Publications Pvt. Ltd.
Chicago Stili AlıntıNirmal Singh. Business Communication: Principles,Methods and Techniques. New Delhi: Deep and Deep Publications Pvt. Ltd, 2009.
MLA AlıntıNirmal Singh. Business Communication: Principles,Methods and Techniques. Deep and Deep Publications Pvt. Ltd, 2009.
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