APA (7 वां संस्करण) प्रशस्ति पत्र
O'Hair, H. D., O'Hair, M. J., & O'Rourke, J. S. (2001). Business communication: A framework for success. South-Western College.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
O'Hair, H. Dan, Mary John O'Hair, और James S. O'Rourke. Business Communication: A Framework for Success. Australia: South-Western College, 2001.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
O'Hair, H. Dan, et al. Business Communication: A Framework for Success. South-Western College, 2001.
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