Leedy, Paul D. <br/><br/>
Practical research :  planning and design / 
Paul D Leedy. 
 - 5th ed. 
 - New Jersey :  Prentice Hall,   ♭1993. 
 - xiv, 348 p. :  ill, maps ;  28 cm 
<br/><br/>Includes bibliographical reference and index. 
<br/><br/><label>ISBN: </label>0023692421 
<br/><br/><label>LC Class. No.: </label>Q180.55M4  / L44 1993