Rogers, Everett M. <br/><br/>
Diffusion of innovations / 
Everett M. Rogers 
 - 4 
 - New York :  The Free Press,  1995       
 - xvii, 518 p. 
<br/><br/><label>ISBN: </label>0028740742 
<br/><br/><label>LC Class. No.: </label>HM 101 R724d 1995