Acock, Alan C. <br/><br/>
A Gentle Introduction to Stata 

 - 6th ed. 
 - Texas  Stata Press  2018 
 - xli,570p.  includes bibliographic references and index 
<br/><br/><label>ISBN: </label>9781597182690 
<br/><br/><label>Dewey Class. No.: </label>001  / ACO