Adams, Gerald R. <br/><br/>
Understanding research methods  

 - 2nd ed. 
 - New York  Longman  1991 
 - ix, 405p. 
<br/><br/><label>ISBN: </label>0801304156 
<br/><br/><label>Subjects--Index Terms: </label>Research methodology-social sciences 
<br/><br/><label>Dewey Class. No.: </label>001.42  / ADA