McBurney, Donald H. <br/><br/>
Research methods 
/ by Donald H. McBurney 
 - 3rd ed. 
 - California:   Brooks/Cole Publishing Company,   1994. 
 - xvi, 496p. 
<br/><br/><label>ISBN: </label>0534176461 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Philosophy<br/>Psychology<br/>Research methods<br/>Variables
<br/><br/><label>Dewey Class. No.: </label>150.72  / MCB/R