Cozby, Paul C. <br/><br/>
Methods in behavioral research / 
Paul C. Cozby 
 - 9th ed. 
 - Boston :  McGraw-Hill,  2007 
 - xv, 410 p. :  ill. ;  23 cm. 
<br/><br/><label>ISBN: </label>0073271314  RM301.24 9780073271316 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psychology--Research--Methodology<br/>Social sciences--Research--Methodology