Leedy, Paul D. <br/><br/>
Practical research : planning and design / 
Paul D. Leedy, Jeanne Ellis Ormrod 
 - 9th ed. 
 -  Pearson Education International  2010 
<br/><br/>18597 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Research
<br/><br/><label>LC Class. No.: </label>Q180  / Lee