 " The New Burdens of War " . Time . 11 May 1970 . Retrieved 10 April 2007 . 
 " The New Burdens of War " . Time . 11 May 1970 . Retrieved 10 April 2007 . 
 The New Burdens of War  . Time . 11 May 1970 . Retrieved 10 April 2007 .