Pelham, Brett W.,  1961- <br/><br/>
Conducting research in psychology :  measuring the weight of smoke / 
Brett W. Pelham, Hart Blanton. 
 - 2nd ed. 
 - Australia ;  Belmont, CA :  Thomson/Wadsworth,  c2003. 
 - xviii, 411 p. :  ill. ;  24 cm.