Sayer, R. Andrew.
Method in social science: a realist approach /
Andrew Sayer 
. - 2nd edition 
. - London : New York : Routledge,  1992 
. - xi, 313 p.  schem.  21 cm. 
<br/>К.: Бібліогр. : с. 299-309, Покажчик 
<br/><label>  ISBN: </label>0-415-07607-2