Leedy, Paul D <br/><br/>
Practical research : planning and design 

 - UK,  Pearson Education Lmited,  2021. 
 - 12th ed. 
<br/><br/><label>ISBN: </label>Practical research : planning and design 
<br/><br/><label>Dewey Class. No.: </label>001.4  / LEE/P