United Nations <br/><br/>
National accounts statistics/  Analysis of main aggregates, 2006 
United Nations 
 - New York:  United Nations,  2008. 
 - 296 p. 
<br/><br/><label>ISBN: </label>9211615070 
<br/><br/><label>Dewey Class. No.: </label>317  / UNI/N