Halvorson, H. H. (2012). 9 things successful people do differently. Boston, Mass: Harvard Business Review Press.
Chicago Stili AlıntıHalvorson, Heidi Halvorson. 9 Things Successful People Do Differently. Boston, Mass: Harvard Business Review Press, 2012.
MLA AlıntıHalvorson, Heidi Halvorson. 9 Things Successful People Do Differently. Boston, Mass: Harvard Business Review Press, 2012.
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