Birnbaum, Ian. <br/><br/>
An introduction to causal analysis in sociology / 
Ian Birnbaum. 
 - London :  MacMillan,  1981. 
 - x, 167 p. :  ill. ;  23 cm. 
<br/><br/>Bibliography : p. 160-163. 
<br/><br/><label>ISBN: </label>0333261119 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Statistical methods