State Rankings 1994 :  A Statistical View of the 50 United States / 
Kathlee O'Leary Morgan, Scott Morgan, a. o. 
 - 5th edt. 
 - Lawrence :  Morgan Quitno Corporation,  1994. 
 - 534 p. 
<br/><br/>Index: p 530-533 
<br/><br/><label>ISBN: </label>0-9625531-7-4