Understanding political science statistics using SPSS: A manual with excersises/ 
Galderisi, Peter 
 - London:  Routledge,  2015. 
 - 181 p. 
<br/><br/><label>ISBN: </label>9781138850675 
<br/><br/><label>Dewey Class. No.: </label>320.015195  / GAL/U