Christensen, Larry B. <br/><br/>
Research methods, design, and analysis 

 - 11th ed. 
 - Boston  Pearson  2014 
 - 544 p 
<br/><br/><label>ISBN: </label>9781292022345 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Boston
<br/><br/><label>LC Class. No.: </label>BF 181 .C48/