Penrose, J. M. . .., Rasberry,Robert W, & Myers,Robert J. (2000). Advanced business communication (4th ed.). Thomson Learning.
शिकागो स्टाइल उद्धरणPenrose, John M ., Rasberry,Robert W, और Myers,Robert J. Advanced Business Communication. 4th ed. Canada: Thomson Learning, 2000.
एमएलए उद्धरणPenrose, John M ., et al. Advanced Business Communication. 4th ed. Thomson Learning, 2000.
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