http://www.library.vanderbilt.edu/central/Brush/BattleKheSanh1968.htmhttp://www.youtube.com/watch?v=4AOuqG5HxaI
http://marinesmagazine.dodlive.mil/2011/04/13/battle-of-khe-sanh/
http://www.cleveland.com/plain-dealer-library/index.ssf/2009/11/plain_dealer_exclusive_my_lai_massacre_photos_by_ronald_haeberle.html
http://www.historylearningsite.co.uk/fall_saigon.htm
http://en.citizendium.org/wiki/Vietnam_War_ground_technology
http://en.citizendium.org/wiki/Agent_Orange
http://en.citizendium.org/wiki/Operation_ROLLING_THUNDER
http://marinesmagazine.dodlive.mil/2011/04/13/battle-of-khe-sanh/
http://www.cleveland.com/plain-dealer-library/index.ssf/2009/11/plain_dealer_exclusive_my_lai_massacre_photos_by_ronald_haeberle.html
http://www.historylearningsite.co.uk/fall_saigon.htm
http://en.citizendium.org/wiki/Vietnam_War_ground_technology
http://en.citizendium.org/wiki/Agent_Orange
http://en.citizendium.org/wiki/Operation_ROLLING_THUNDER