Campbell, John. <br/><br/>
Speak for yourself :  a practical guide to giving successful presentation, speeches and talks / 
John Campbell. 
 - London :  BBC Books,  1990. 
 - 144 p. :  ill. ;  21 cm. 
 - Business matters management guide. .
 - Business matters management guide. .
<br/><br/><label>ISBN: </label>0563215119 (pbk.)  Hadiah 9780563215110 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Business presentations.<br/>Public speaking.