Stata longitudinal-data/panel-data reference manual :  release 12. 
 Stata release 12 : longitudinal data/panel data  Stata 12 : longitudinal data/panel data 

 - College Station, Tex. :  StataCorp LP,  c2011. 
 - iii, 570 p. :  ill. ;  24 cm. 
<br/><br/> "A Stata Press publication." 
<br/><br/><label>ISBN: </label>9781597180962 1597180963 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Longitudinal method<br/>Panel analysis
<br/><br/><label>Dewey Class. No.: </label>330 STA 2011 A013 Or.