COABY, Paul C.  Bates, Scott C. <br/><br/>
Methods in behavioral research  xix,411p 
/Paul C.Cozby, Scott C.Bates 
 -  14th 
 -  McGraw Hill Education  2020 
<br/><br/> it includes index 
<br/><br/><label>ISBN: </label>9781260565980