Riggs, Fred W. <br/><br/>
The Intercocta manual :  towards an international encyclopaedia of social science terms / 
by Fred W. Riggs. 
 - París :  UNESCO,  1988. 
 - vi, 166 p. 
 - Reports and papers in the social sciences ;  58. .
<br/><br/><label>ISBN: </label>9231025562 
<br/><br/><label>No. de Clasificación Universal Decimal: </label>OC 002: 3 =20 RIG No. 58