Sommer, Barbara and Sommer, Robert <br/><br/>
A practical guide to behavioral research  : tools and techniques 

 - 4th ed. 
 - Oxford  ; Oxford Univercity Press  , 1997 
 - xviii,376p. 
<br/><br/><label>ISBN: </label>0195104196  495 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Behaviorism<br/>Psychology
<br/><br/><label>Dewey Class. No.: </label>150.1943  / SOM