Humphreys, Tony. <br/><br/>
The power of \'negative\' thinking / 
Tony Humphreys. 
 - Dublin :  Newleaf,  2004. 
 - 224 p. ;  20 cm. 
<br/><br/> Originally published: 1996. 
<br/><br/><label>ISBN: </label>0717137899 9780717137893 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Self-actualization (Psychology).<br/>Negativism.
<br/><br/><label>Dewey Class. No.: </label>158.1 HUM