Start and Run a Consulting Business / 
Gray , Douglas A.  
 - 6th ed . 
 - USA:  Self-counsel press ,  2002. 
 - xx,211 p,: 
<br/><br/><label>ISBN: </label>1551803968 
<br/><br/><label>LC Class. No.: </label>HD69  / .G73  2002