Berry, Richard <br/><br/>
Direct selling :  from door to door to network marketing / 
Richard Berry. 
 - Oxford :  Butterworth-Heinemann,  1997. 
 - xxviii, 231 p. :  ill. 
<br/><br/><label>ISBN: </label>0750622350 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Direct selling.<br/>Marketing.