COOPER D R & Schindler Pamela. (2019). BUSINESS RESEARCH METHODS (12th.). MCGRAW-HILL Education India.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCOOPER D R और Schindler Pamela. BUSINESS RESEARCH METHODS. 12th. Chennai: MCGRAW-HILL Education India, 2019.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCOOPER D R और Schindler Pamela. BUSINESS RESEARCH METHODS. 12th. MCGRAW-HILL Education India, 2019.
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