Sommer, Barbara Baker, <br/><br/>
A practical guide to behavioral research :  tools and techniques / 
Barbara Sommer, Robert Sommer. 
 - 4th ed. 
 - New York :  Oxford University Press,  1997. 
 - xviii, 376 p. :  ill. ; 
<br/><br/>Includes bibliographical references and indexes. 
<br/><br/><label>ISBN: </label>0195104196 (paper : acidfree paper) 0195104188 (acidfree paper) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences<br/>Social sciences<br/>Psychology<br/>Social sciences
<br/><br/><label>Dewey Class. No.: </label>150.72  / SOM