Halvorson, H. H. (2012). 9 things successful people do differently. Boston, Mass: Harvard Business Review Press.
शिकागो स्टाइल उद्धरणHalvorson, Heidi Halvorson. 9 Things Successful People Do Differently. Boston, Mass: Harvard Business Review Press, 2012.
एमएलए उद्धरणHalvorson, Heidi Halvorson. 9 Things Successful People Do Differently. Boston, Mass: Harvard Business Review Press, 2012.
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