 " Cambodia : Struggle for Survival " . Time . 13 July 1970 . Retrieved 10 April 2007 . 
 " Cambodia : Struggle for Survival " . Time . 13 July 1970 . Retrieved 10 April 2007 . 
 Cambodia : Struggle for Survival  . Time . 13 July 1970 . Retrieved 10 April 2007 .