Bertsch, Gary K., Clark, Robert P., Wood, David M..
Companing political systems : power and policy in three worlds. - 4th edition /

. - New York  : Macmillan Publ. Co.,  1991 
. - XVI, 727 p.  24 cm. 
<br/>К.: Іл., табл. 
<br/><label>  ISBN: </label>0-02-309020-0