Harris, Thomas L.
The Marketers guide to public relations : how todays top companies are using the new PR to gain a competitive edge
John Wiley & Sons, 1993
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Gray, Edmund R.
Management : the competitive edge
Macmillan, 1990
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Allen, Judy
Marketing your event planning business: a creative approach to gaining the competitive edge / Judy Allen
John Wiley, 2004
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Luthans, Fred
Psychological capital : developing the human competitive edge
Oxford University Press , 2007
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Luthans, Fred
Psychological capital : developing the human competitive edge
Oxford University Press, 2007
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