Democracy at the polls  : a comparative study of competitive national elections 
/ ed. by David Butler, Howard R.Penniman, and Austin Ranney 
. - London  : American enterprise institute for public police research, c1981
. - 366 p.  ; 24 cm. 
<br/><br/>bibliogr,index 
<br/><br/><label>ISBN: </label>0844734055 
<br/><br/><label>Source: </label> Don du CCA 
<br/><br/><label>Universal Decimal Class. No.: </label>342.8.