 " Cambodia : Now It 's ' Operation Buy Time ' " . Time . 25 May 1970 . Retrieved 10 April 2007 . 
 " Cambodia : Now It 's ' Operation Buy Time ' " . Time . 25 May 1970 . Retrieved 10 April 2007 . 
 Cambodia : Now It 's ' Operation Buy Time '  . Time . 25 May 1970 . Retrieved 10 April 2007 .