Proquest Statistical Abstract of the United States 2016. 

 - 6th ed. 
 - Lanham, MD :  Bernan Press,   2015. 
 - xiv, 1012 p. 
<br/><br/><label>ISBN: </label>9781598889451 
<br/><br/><label>Dewey Class. No.: </label>317.3  / PRO