Creswell, John W. <br/><br/>
Research design  qualitative & quantitative approaches 
John W. Creswell 
 - Thousand Oaks  Sage Publications  1994 
 - 228 p. : ill. ; 23 cm. 
<br/><br/><label>ISBN: </label>0803952546  RM156.75 
<br/><br/><label>LCCN: </label>94-4236 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Research--Methodology<br/>Social sciences--Statistical methods