Trochim, William M &Donnelly,James P. <br/><br/>
Research Methods:The Essential Knowledge Base 

 - 2016 
 - Boston  cengage learning 
 - 421 
<br/><br/><label>ISBN: </label>9781133954774 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Methodology
<br/><br/><label>National Library of Medicine Call No.: </label>Q 180 T 2016